Upright deep cleaner
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Solution Overview
Problem
Traditional upright carpet extractors require disassembly to replace components like the power cord and brushroll, which is inconvenient and time-consuming.
Innovation Solution
The design features a modular structure with a twist and lock connection for the brushroll and a slidable connector for the power cord, allowing for easy replacement without disassembling the housing, along with a pivotable brush carriage assembly for service access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If traditional upright carpet extractors are designed with integrated power cords and brushrolls, then structural integrity is maintained, but component replacement requires disassembly and is time-consuming
Solution Approach 1:
The power cord is divided into two separate components: a fixed housing-integrated portion and a removable connector portion. This segmentation allows the connector to be easily detached and replaced without disassembling the housing, while the housing maintains its structural integrity. The brushroll is similarly made removable through a quick-release mechanism, enabling easy replacement without tool assistance.
Solution Approach 2:
The connector portion of the power cord is extracted from the housing, allowing it to be independently replaced. The brushroll is also extracted from the housing through a quick-release mechanism, enabling users to remove and replace these components without affecting the overall housing structure or requiring complex disassembly procedures.
2Loss of time
If the power cord connector is made removable for easy replacement, then maintenance time is reduced, but the risk of improper connection and electrical issues increases
Solution Approach 1:
A spring-loaded contact mechanism serves as an intermediary between the connector and the housing electrical system. This intermediary ensures reliable electrical connection through automatic spring pressure that maintains consistent contact force, while still allowing easy connector removal. The spring mechanism compensates for manufacturing tolerances and wear, maintaining connection reliability over time.
Solution Approach 2:
The connector design incorporates self-aligning features and automatic engagement mechanisms that guide proper connection without requiring user expertise. The spring-loaded contacts automatically adjust to ensure reliable electrical connection, and the housing includes alignment features that prevent improper insertion, enabling users to safely perform replacements without technical training.
3Ease of operation
If the brushroll is made easily removable without tools, then user convenience is improved, but the structural design becomes more complex
Solution Approach 1:
The brushroll support system transitions from a static fixed mounting to a dynamic quick-release mechanism. The support legs include movable locking elements that can be easily actuated by the user to release the brushroll, and spring-loaded retainers that automatically hold the brushroll in position during operation. This dynamic system provides both easy removal and secure fixation without requiring tools.
Solution Approach 2:
End caps with twist-and-lock connections serve as intermediaries between the brushroll and the support legs. These end caps incorporate simple rotational locking mechanisms that secure the brushroll during operation but can be easily released by twisting in the opposite direction. This intermediary component simplifies the user interaction while maintaining a secure connection.
Data Source
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AI summary
A surface cleaning apparatus (10) comprises a base assembly (12), an upright handle assembly (14) pivotally mounted to the base assembly (12), a fluid distribution system including a supply of cleaning fluid, and a fluid recovery system for drawing dirty cleaning fluid from the surface to be cleaned. The base assembly (12) comprises a fluid supply tank (22) mounted on a base platform (20), and a recovery tank (24) and lid (70) mounted on the supply tank (22). The nozzle (146) assembly is split into three separable sections, and the upper handle (300) is foldable to a storage position. The base assembly (12) further comprises a pivotable brush carriage (210) assembly. A method for renting extraction cleaning machines (10) utilizes a vending machine (600) that dispenses cleaning formulations packaged in single use packages (602).