Integrated Cap Design for Transport Trolley Brake Safety
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Solution Overview
Problem
The assembly and cost of trolleys with caps are complicated due to the large number of parts, leading to increased expenses and potential finger pinching during operation.
Innovation Solution
A modified cap design reduces the number of parts by integrating the connecting and release parts into two nested components, featuring lugs and a shaft that prevent finger trapping and simplify assembly, while using a weatherproof plastic material and injection molding for production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the cap is divided into four separate parts (connection part, release part, and two-part cover), then the functionality and safety are improved, but the assembly time and cost increase
Solution Approach 1:
The patent combines the connection part and release part into a single integrated cap structure. The release part is formed as one piece with the connection part, eliminating the need for separate components. This merging reduces assembly steps while maintaining the safety function of preventing finger pinching through the integrated design of the release mechanism and protective cover.
Solution Approach 2:
The integrated cap structure performs multiple functions simultaneously: it provides the connection interface for the sliding device, incorporates the release mechanism for activating the brake, and includes the protective cover to prevent finger pinching. This multi-functionality in a single component reduces the number of parts while maintaining all necessary safety and operational features.
2Reliability
If the cap is divided into four separate parts, then the functionality is improved, but the number of parts and cost increase
Solution Approach 1:
The patent merges the connection part and release part into a single cap component, reducing the total number of parts from four to one. This integration maintains the functionality of connecting the sliding device to the spar and providing the release mechanism, while eliminating the complexity of assembling multiple separate parts.
Solution Approach 2:
While integrating the main functional parts, the patent maintains segmentation in the design of the release mechanism itself, with distinct lugs and bore structures that provide functional separation within the unified component. This allows complex functionality to be achieved within a single part rather than requiring multiple separate components.
3Reliability
If the traditional four-part cap design is used, then the safety function is provided, but additional costs are incurred
Solution Approach 1:
By combining multiple parts into a single cap structure, the patent reduces manufacturing costs through fewer components requiring production, inventory management, and quality control. The integrated design can be manufactured as one piece using injection molding or similar processes, eliminating assembly operations and reducing overall production complexity while maintaining the safety function.
Solution Approach 2:
The patent changes the manufacturing approach from assembling multiple parts to producing a single integrated component through processes like injection molding. This parameter change in the manufacturing method reduces costs by eliminating assembly operations, reducing inventory requirements, and simplifying quality control, while the integrated design maintains the necessary safety features.
Data Source
Figure 1~6
Figure 7~13
AI summary
The cart has a loading area, and two beams arranged at a rear side of a chassis, where the cart is movable by hand. A sliding device is provided for influencing a brake device that is provided in the beams. A hood (8) connects the sliding device with the brake device and the beams. The hood is formed from a connection part and a releasing part, where the releasing part and the connection part are fixed to each other. The releasing part is equipped with a set of lugs, and a connection part (9) exhibits a retaining area (9.1), which enables insertion of the releasing part.