Refuse Bin Wheel Hub with Molded Elastic Locking Element
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Solution Overview
Problem
Conventional waste collection bin wheels have complex designs requiring multiple parts for assembly and disassembly, leading to increased complexity and potential wear during use.
Innovation Solution
A waste collection bin wheel with a plastic hub featuring an elastically deformable locking element molded directly into the hub, eliminating the need for separate springs and pins, and incorporating a sacrificial element to minimize wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional spring and pin assembly is used for locking the wheel to the axle, then the wheel can be securely fastened, but the number of parts increases and assembly complexity increases
Solution Approach 1:
The locking function is merged into the hub structure itself. The hub includes an insertion hole for the axle with a locking mechanism formed directly during the molding process, eliminating the need for separate spring and pin components. This integration reduces the number of parts while maintaining secure fastening.
Solution Approach 2:
The hub structure provides its own locking mechanism through the molded-in insertion hole design. The hub serves both as the structural component and as the locking mechanism, eliminating the need for separate locking components that would require additional assembly steps.
2Adaptability or versatility
If a conventional spring and pin assembly with an additional slot is used, then the wheel can be removed for replacement, but the disassembly procedure becomes awkward and complex
Solution Approach 1:
The removal function is merged with the existing insertion hole structure. The same insertion hole that receives the axle during assembly also provides access to the locking mechanism for removal, eliminating the need for a separate slot and simplifying the disassembly procedure.
3Adaptability or versatility
If the locking element is made from separate components (spring and pin), then the locking mechanism can be adjusted, but manufacturing complexity increases
Solution Approach 1:
The locking mechanism is merged into the hub as a molded-in feature. The insertion hole includes integrated locking elements that are formed during the hub molding process, eliminating the need for separate manufacturing and assembly of spring and pin components.
Solution Approach 2:
The molded-in locking mechanism serves multiple functions: it provides secure fastening during operation and allows for tool-free removal when needed. This multi-functional design simplifies both manufacturing and operation while maintaining adaptability.
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
Simplifies the design and assembly of the wheel, reducing the number of parts and minimizing wear during use by integrating the locking mechanism and using a sacrificial element to absorb frictional stress.
Implementation Method 1
at least one wheel locking element on the axle, molded with the hub, elastically deformable, and extending inside the insertion hole
Implementation Method 2
the locking element comprising a sacrificial element configured to be in contact with the axle... the axle will rub against the sacrificial element of the rotating wheel
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
The invention relates to a waste collection bin wheel (2) comprising a hub (4) made of plastic material, the hub (4) comprising an insertion hole (6) for an axle (3) made on a face (11) of the hub (4), at least one locking element (12) for the wheel (2) on the axle (3), molded with the hub (4), elastically deformable, and extending inside the insertion hole (6), the locking element (12) comprising a sacrificial element configured to be in contact with the axle (3).