Pool Cleaner Obstacle Detection via Rotary Direction-Changing Assembly
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Solution Overview
Problem
Automatic swimming pool cleaners lack the ability to detect obstacles and change direction efficiently, often relying on complex and costly electronic systems or swivel structures that can entangle with power cables, leading to inefficient cleaning.
Innovation Solution
A mechanism with a drive part connected to the cleaner housing, an arresting assembly, and a rotary direction-changing assembly that uses hydraulic or magnetic coupling to rotate relative to the cleaner, allowing it to change direction without entangling power cables, utilizing a rotating assembly and direction-changing assembly to control the cleaner's movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a swivel structure is used to change direction by rotation, then the cleaner can change direction, but the power cable may be twisted along with the rotation, eventually preventing movement
Solution Approach 1:
The cleaner is divided into a fixed housing and a rotatable cleaning assembly. The drive part remains fixed to the housing while the cleaning assembly can rotate independently to change direction, preventing the power cable from being twisted during rotation
Solution Approach 2:
The drive part is extracted from the rotatable cleaning assembly and fixed to the housing. This separation ensures that the drive mechanism and power connection remain stationary while only the cleaning components rotate, eliminating cable entanglement issues
2Difficulty of detecting and measuring
If an electronic element is used to detect contact with a wall or obstacle, then the cleaner can detect obstacles, but the design adds complexity and cost to the cleaner
Solution Approach 1:
The patent replaces complex electronic obstacle detection systems with a simple mechanical interaction between the fixed drive part and the rotatable cleaning assembly. When the cleaning assembly encounters an obstacle, it naturally rotates or changes direction through mechanical contact, eliminating the need for electronic sensors and control systems
Solution Approach 2:
The cleaning assembly automatically responds to obstacles through its own mechanical structure. The interaction between the fixed drive part and rotatable cleaning assembly creates inherent obstacle detection and response capabilities without requiring external electronic control systems
3Productivity
If the cleaner waits until the end of a set time period to return, then the cleaner can operate continuously, but the cleaner is inefficient when meeting a wall or obstacle
Solution Approach 1:
The mechanical interaction between the fixed drive part and rotatable cleaning assembly provides immediate feedback when an obstacle is encountered. The cleaning assembly's rotation or directional change in response to obstacles creates real-time feedback that allows the cleaner to adapt its path without waiting for predetermined time intervals
Solution Approach 2:
The cleaning assembly transitions from a static to a dynamic state when encountering obstacles. The rotatable assembly can freely rotate or change direction in response to mechanical contact with walls or obstacles, enabling adaptive, real-time navigation that improves cleaning efficiency by eliminating fixed time-based operation cycles
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution results in a compact, cost-effective mechanism that enables efficient obstacle detection and direction change, preventing power cable entanglement and improving cleaning efficiency by allowing the cleaner to travel freely in different directions when encountering walls.
Implementation Method 1
The rotating assembly is coupled with the suction assembly by a coupling piece. Based on the principle of magnetic coupling, the transfer of torque of the suction assembly can be achieved based on the interaction of repelling or attraction between magnets or attraction between a magnet and a ferromagnetic material such as iron, nickel and cobalt
Implementation Method 2
The rotating assembly is coupled with the suction assembly. Based on the principle of hydraulic coupling, the change in moment of momentum due to the interaction of a liquid, the suction assembly and the rotating assembly results in the transfer of torque of the suction assembly
Data Source
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AI summary
The present invention provides a mechanism for detecting obstacles and mechanically reversing (a direction of) a pool cleaner, including a drive part in non-rotatable connection with a cleaner housing, an arresting assembly connected to the cleaner housing, and a rotary direction-changing assembly that is rotatably connected to the cleaner housing or the drive part. The arresting assembly cooperates with the rotary direction-changing assembly. The mechanism for detecting obstacles and mechanically reversing (a direction of) a pool cleaner is compact in structure, low in manufacturing cost, and can perform obstacle detection and change a direction of the pool cleaner. With the structure of the rotary direction-changing assembly capable of rotating relative to the cleaner housing, the cleaner, when meeting an obstacle, is allowed to change the traveling direction, thereby resulting in a high working efficiency.