Plastic Locking Ring for Transport Container Lid Security
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Solution Overview
Problem
Existing container designs fail to ensure secure transport of liquids and dangerous goods due to unintentional release of the lid under external forces, and existing solutions like metal clamping rings are prone to deformation and leakage during drops or impacts.
Innovation Solution
A plastic container with a locking ring that encompasses the edge of the container and lid, featuring inwardly projecting locking elements and recesses for secure attachment without radial force reduction or turnbuckles, ensuring the lid remains sealed under external forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a metal clamping ring is used to secure the lid, then the container maintains seal integrity under normal conditions, but the clamping ring deforms during drops or impacts causing leakage
Solution Approach 1:
The patent changes the material parameter from metal to plastic for the locking ring, which fundamentally alters the deformation characteristics. The plastic material absorbs impact energy through elastic deformation without permanent damage, preventing the deformation transfer that causes leakage in metal rings during drops or impacts.
Solution Approach 2:
The locking ring is designed as a composite structure combining plastic material with integrated locking elements and recesses. This composite design provides both the flexibility needed to absorb impacts and the structural integrity to maintain seal reliability under various transport conditions.
2Reliability
If a turnbuckle or metal clamping ring is used, then the lid is secured against the container, but the structure becomes complex and prone to deformation under external forces
Solution Approach 1:
The locking ring is segmented into functional zones: locking elements for securing to the container rim, recesses for receiving the clamping profile, and an integrated design that eliminates the need for separate turnbuckles or complex fastening mechanisms. This segmentation simplifies the overall structure while maintaining reliable lid security.
Solution Approach 2:
The locking ring features self-locking through its integrated design with locking elements that automatically engage with the container rim and recesses that receive the clamping profile. The structure serves itself by distributing forces through its geometry rather than requiring external adjustment mechanisms like turnbuckles.
3Reliability
If radial force is applied to secure the lid, then the seal is maintained, but the force transfers deformation to the container and lid during impacts
Solution Approach 1:
The patent changes the force application parameter from rigid radial compression to distributed elastic pressure. The plastic locking ring applies sealing force through its elastic deformation capability, maintaining the seal without transferring harmful deformation forces to the container and lid during impacts.
Solution Approach 2:
The locking ring is designed with inherent elastic cushioning that absorbs impact energy before it can transfer to the container-lid assembly. The material properties and structural design provide beforehand cushioning against deformation during drops or lateral forces, protecting the seal integrity.
Data Source
Figure 1~2
Figure 3a~3c
Figure 4a~6b
AI summary
The invention relates to a retaining ring (6) for securing a lid (5) attached to a plastic container (2) in the form of a bucket during transport. The retaining ring (6) has a circumferential side wall (7) for gripping an edge of the container (2) and a locking area (8) projecting inwards beyond the circumferential side wall (7) for gripping an edge of the lid (5), wherein the side wall (7) and/or the locking area (8) are enclosed. Inwardly projecting locking elements (9) are formed on the side wall (7) for attaching the retaining ring (6) to the edge (10) of the container (2). Recesses (17) are formed in the side wall (7) between the side of the side wall (7) on which the inwardly projecting locking area (8) is formed and the locking elements (9).The invention also relates to a container (1) comprising: a container (2) made of plastic in the form of a bucket, with a bottom (3) and with a circumferential side wall (4), a lid (5) for closing an opening formed on the container (2), and a retaining ring (6) as described above, the circumferential side wall (7) of which surrounds an edge of the container (2) and the retaining area (8) of which projects inwards beyond the side wall (7) overlaps an edge of the lid (5).