Cardan-Joint Floor Head for Lateral Mobility in Handheld Scrubbers
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Solution Overview
Problem
Existing floor preparation devices lack mobility and versatility, particularly in lateral directions, and often require external power sources or water supplies, limiting their use in wet cleaning and maneuverability in corners or under projections.
Innovation Solution
A hand-held floor treatment device with a cardan joint system allowing rotation and swiveling of the base part, combined with counter-rotating drive plates and an integrated energy storage and liquid supply, enabling easy movement and operation in various directions without external power or water connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a joint is arranged laterally on the base part to allow movement in two directions, then the device can be adjusted to user size and moved back and forth, but lateral mobility is restricted due to protruding parts
Solution Approach 1:
The patent applies a cardan joint system that enables dynamic movement in multiple directions. The base part can tilt forward and backward while also rotating laterally, transforming the static lateral restriction into a dynamic multi-axis movement capability that adapts to different cleaning scenarios
Solution Approach 2:
The invention adds a rotational degree of freedom around the vertical axis to the existing forward-backward movement. This dimensional addition allows the device to move not only in the traditional linear direction but also to rotate and access lateral areas, corners, and niches that were previously unreachable
2Speed
If wheels are used to support the device, then easy movement in linear direction is achieved, but real mobility in lateral direction is not allowed
Solution Approach 1:
The cardan joint system transforms the static wheel-supported structure into a dynamically adaptable platform. The base part can tilt and rotate independently of the wheel direction, enabling the device to approach walls at angles and access lateral spaces while maintaining efficient linear movement capability
3Adaptability or versatility
If liquid containers are attached to the device itself, then wet cleaning capability is provided, but weight is increased
Solution Approach 1:
The patent merges the liquid supply system directly into the base part structure, combining the tank, pump, and distribution mechanisms into an integrated unit. This consolidation reduces overall weight compared to separate attached containers while maintaining full wet cleaning functionality through the cardan joint-enabled mobility
4Power
If external power sources are required for polishing or grinding functions, then processing capability is improved, but operational constraints and mobility are reduced
Solution Approach 1:
The patent implements self-contained energy storage units (batteries) directly in the base part, allowing the device to generate and store its own power independently. This eliminates the need for external power sources or cables, enabling unrestricted movement to corners, niches, and areas without electrical outlets while maintaining full polishing and grinding functionality
Data Source
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AI summary
The invention relates to a hand-held soil cultivation implement comprising a base section (1) with a bracket (5) that at least partially surrounds the base section (1) and is connected to the base section (1) via a first joint (4) adjustable in the cultivation direction (6), and further comprising a guide section (2) with a handle section (3) attached to the bracket (5). The guide section (2) has a further joint (8) at its lower end below the center but above the base section (1), about which the guide section (2) is adjustable transversely to the cultivation direction (6), so that the base section (1) can be rotated by a user (P) by at least ±45° parallel to the cultivation surface (B) about a vertical axis (A1) of the base section (1), even when the guide section (2) is tilted.