Handle-shell-free Parasol with Closed Chute Shading
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Solution Overview
Problem
Existing Roman Umbrellas have complex handle-shell structures that are prone to equipment failure and are difficult to clean due to exposed parts, especially the chute, which allows dust and pollutants to enter, affecting their usability.
Innovation Solution
A parasol with a handle-shell-free structure featuring a sliding block and chute with a shading device, along with a collecting mechanism that includes a drive assembly, clutch fork assembly, and transmission assembly, which keeps the internal space closed and prevents debris from entering, improving aesthetics and usability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a handle shell structure is used for opening and closing the Roman umbrella, then operation convenience is improved, but device complexity increases and reliability deteriorates due to exposed parts prone to equipment failure
Solution Approach 1:
The patent removes the traditional handle shell structure from the Roman umbrella design. By extracting this component, the invention simplifies the overall structure while maintaining operational convenience through alternative means (direct handle access). This resolution eliminates the complexity and reliability issues associated with the handle shell while preserving the core function of opening and closing the umbrella.
Solution Approach 2:
The patent segments the umbrella structure by separating the handle area from the canopy mechanism. The handle becomes an independent, accessible component without requiring a enclosing shell, allowing for simpler construction and easier maintenance while maintaining full operational functionality.
2Ease of operation
If a handle shell structure is used, then operation convenience is improved, but aesthetics deteriorate due to the exposed handle shell
Solution Approach 1:
By removing the handle shell entirely, the invention eliminates the aesthetic compromise of having an exposed, potentially bulky shell structure. The handle becomes a clean, integrated part of the overall design, improving visual appearance while maintaining operational accessibility.
3Ease of manufacture
If the chute is exposed on the stand column, then assembly is simplified, but product reliability deteriorates due to dust and pollutants entering the chute
Solution Approach 1:
The patent introduces a protective cover (shading device) that encloses the chute while maintaining a relatively simple structure. This thin-walled protective element prevents dust and pollutants from entering the chute mechanism, thereby extending product lifespan without significantly complicating the assembly process.
Solution Approach 2:
The protective cover is installed in advance to prevent harmful factors (dust, pollutants) from entering the chute. This preliminary protective measure stops contamination before it can affect the mechanism, thereby maintaining reliability while keeping the overall structure simple.
4Ease of manufacture
If the chute is exposed, then assembly is simplified, but cleanliness deteriorates due to difficulty in cleaning and pollutant accumulation
Solution Approach 1:
The protective cover creates a closed environment around the chute, preventing pollutant accumulation. The simple design of the cover maintains assembly ease while effectively solving the cleanliness issue by blocking external contaminants from reaching the chute interior.
Data Source
AI summary
A parasol includes a stand column and an umbrella cover assembly which includes a tilt strut. A sliding block is installed in cooperation with one end of the tilt strut. A chute is disposed on the stand column, and the sliding block is for sliding up and down along the chute. The chute is provided with a shading device. A collecting mechanism is coordinately arranged in the stand column, and includes a drive assembly, a clutch fork assembly and a transmission assembly. The transmission assembly includes a collecting and supporting transmission assembly and an inclination transmission assembly. The drive assembly is able to be in clutch cooperation with the collecting and supporting transmission assembly or the inclination transmission assembly under action of the clutch fork assembly.