Friction-Lock Waste Receptacle Cover with Self-Closing Torque
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Solution Overview
Problem
Existing waste collector covers lack a secure and easy-to-handle mechanism for maintaining the lid in the open position while ensuring high stability of the base body.
Innovation Solution
A cover design featuring two pairs of holding projections with reinforcing ribs and retaining projections that engage with friction, allowing secure hold in the open position and automatic closure with minimal external effort, eliminating the need for separate axis components and enhancing stability through balanced mass distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the cover is designed with a simple hinge mechanism, then the device complexity is reduced, but the cover cannot be securely held in the open position and automatically pivots back to closed position
Solution Approach 1:
The cover mechanism uses the weight of the cover parts themselves to automatically pivot them into the closed position after external compressive forces cease. The mass distribution is specifically designed so that the outer ends generate sufficient torque for automatic closure without requiring additional motors or complex actuating mechanisms
Solution Approach 2:
The cover parts are designed to dynamically transition between open and closed positions. The articulation allows pivoting movement, and the mass distribution creates a dynamic system where the cover automatically returns to closed position based on gravitational force and torque generation
2Stability of the object's composition
If reinforcing ribs are added to increase base body stability, then the stability is improved, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The base body is segmented into multiple functional elements including lateral frame parts, front and rear frame parts, and reinforcing ribs. This segmentation allows each component to perform its specific structural function while being manufactured as integrated parts of the cover assembly
Solution Approach 2:
The reinforcing ribs are merged with the lateral frame parts, connecting the inner sides of the limbs without extending to the lower ends. This integration provides structural reinforcement while maintaining manufacturing efficiency through combined成型 processes
3Reliability
If retaining projections are added to securely hold the cover in open position, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The retaining projections on the cover parts engage with corresponding features on the base body to automatically hold the cover in the open position. The friction-based engagement provides reliable holding without requiring additional locking mechanisms or actuating systems
Solution Approach 2:
The retaining projections are strategically positioned at specific locations on the cover parts to provide localized engagement points. This localized feature design achieves reliable holding functionality without adding complexity across the entire structure
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 cover securely holds the lid in the open position with high stability and automatically pivots to the closed position after external forces cease, enhancing user convenience and structural integrity.
Implementation Method 1
a retaining section formed on the base body can engage with friction
Data Source
Figure 1
Figure 2~4
Figure 3
AI summary
The invention relates to a cover (1) for a receiving container (100), in particular for a waste collector, comprising: - a base body (3) designed to be attached or arranged on a housing (2) of the receiving container (100); - at least one cover part (4, 5) hinged to the base body (3) in such a way that it can be pivoted inwards from a closed position, in which it can close an upper opening of the housing (2) of the receiving container (100), to an open position, in which it can release the opening; - retaining means for holding the cover part (4, 5) in the open position, wherein the retaining means comprise two pairs of retaining projections (41, 42, 51, 52) formed on an underside of the cover part (4, 5), wherein each of the two pairs of retaining projections (41, 42, 51, 52) is located between the retaining projections (41, 42, 51, 52). 42, 51, 52) each have a space formed between them,into which a holding section formed on the base body (3) can engage in a friction-fit manner.