Three-Layer Nested Coupling Structure for High-Capacity Cart Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing carts have limited storage capacity and stability, as they typically have only one layer for storage and lack a robust coupling structure, leading to issues with weight-bearing capacity and structural integrity.
Innovation Solution
A coupling structure for a cart featuring a three-layer ring-shaped embedded structure, comprising first, second, and third connectors that are detachably connected to form a stable and strong bearing capacity, allowing for multiple layers of storage and enhanced weight-bearing capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single-layer storage structure is used, then the device complexity is reduced, but the storage capacity and object classification capability deteriorate
Solution Approach 1:
The cart body is divided into multiple independent storage layers (first storage layer, second storage layer, third storage layer) that can be stacked vertically. Each layer is a separate component that can be independently assembled and disassembled, enabling expanded storage capacity while maintaining manageable structural complexity through modular design.
Solution Approach 2:
The storage structure transitions from a single-layer horizontal arrangement to a multi-layer vertical stacking configuration. By utilizing the vertical dimension, the cart achieves significantly increased storage capacity without proportionally increasing the footprint area, effectively solving the contradiction between storage volume and structural simplicity.
2Ease of operation
If layers are loosely connected for easy assembly, then the ease of operation is improved, but the strength and stability deteriorate when heavy objects are stored
Solution Approach 1:
The connector employs a nested structure where the connection block inserts into the connection cavity, and the connection pin passes through both components to secure them together. This nested arrangement creates a tight, interlocked joint that provides strong bearing capacity for heavy objects while still allowing for relatively simple assembly and disassembly operations.
Solution Approach 2:
The connection cavity and connection block feature rounded or curved surfaces that facilitate smooth insertion and alignment during assembly. The curved geometry enables easy engagement of components while the interlocking shape maintains strong mechanical connection strength when heavy loads are applied.
3Ease of operation
If detachable connectors are used for easy assembly, then the ease of operation is improved, but the reliability and stability deteriorate
Solution Approach 1:
The connector design incorporates pre-positioned connection pins and pre-formed connection cavities that guide the assembly process. The connection block is pre-shaped to fit precisely into the connection cavity, ensuring proper alignment and secure connection before the final locking action, thereby maintaining high reliability while preserving ease of assembly.
Solution Approach 2:
The connector components are designed to self-align and self-lock during assembly. The connection pin automatically engages with the connection cavity when brought together, and the structural geometry ensures proper positioning without requiring additional alignment tools or complex assembly procedures, thus achieving both ease of operation and structural stability.
4Strength
If multiple connectors are used to form embedded structure, then the strength and stability are improved, but the device complexity increases
Solution Approach 1:
The same connector design (comprising connection block, connection cavity, and connection pin) is used repeatedly at multiple locations to join different cart components (cart body to support columns, support columns to shelves, etc.). This universal connector serves multiple functions throughout the cart structure, providing enhanced strength and stability while avoiding the need for multiple different connector types, thus limiting the increase in overall device complexity.
Data Source
AI summary
A coupling structure for a cart comprises a first connector, a second connector, and a third connector. The first connector is detachably connected to the second connector, and the second connector is detachably connected to the third connector. The first connector is located inside the second connector, and the second connector is located inside the third connector, such that the first connector, the second connector, and the third connector form a three-layer ring-shaped embedded structure. According to the embodiments of the present disclosure, the coupling structure is stable, and has a strong bearing capacity. The cart using the coupling structure can load more objects, and has a stronger bearing capacity.