Drain Auger Auto-Feed Cable Control Mechanism
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Solution Overview
Problem
Existing drain augers often require separate power sources and exposed cables, leading to electrical hazards and unsanitary conditions when unclogging drains, especially in wet environments.
Innovation Solution
A handheld drain auger with a motor, actuator, and mode selector that allows for auto-feed and spin modes, enabling the cable to be extended, retracted, and spun automatically, reducing the need for manual handling and power cords, and incorporating a foot pedal for operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a separate power source with electrical cord is used to power the drain auger, then the drain auger can address more difficult clogs, but electrical hazards occur in areas where water is present
Solution Approach 1:
The patent replaces the electrical motor system with a hand-cranked mechanical drum system. The user manually rotates the drum to feed and retract the cable, eliminating all electrical components from the drain auger body. This substitution resolves the electrical hazard issue while maintaining the core functionality of cable feeding and retrieval.
Solution Approach 2:
The patent removes the electrical motor and power source from the drain auger system entirely, extracting only the necessary mechanical elements (drum, cable, handle). This extraction eliminates the electrical hazard while preserving the essential cable-based clog clearing function.
2Ease of operation
If the cable is exposed and handled by the operator during feeding and retraction, then the drain auger is easier to operate, but unsanitary conditions result for the user
Solution Approach 1:
The hand-cranked drum system automatically feeds and retracts the cable through mechanical rotation, eliminating the need for the operator to manually handle the cable. The drum acts as a self-service mechanism that controls cable deployment and retrieval, keeping the operator's hands clean and away from contaminated areas.
Solution Approach 2:
The drum serves as an intermediary mechanism between the operator and the cable. Instead of direct manual handling, the operator rotates the drum which then controls cable movement. This intermediary protects the operator from direct contact with the cable and any contaminants it may carry.
3Device complexity
If manual handling of the cable is required for feeding and retraction, then the device structure is simpler, but the operation becomes more time-consuming and less efficient
Solution Approach 1:
The hand-cranked drum introduces dynamic mechanical advantage through rotational motion. As the user cranks the drum, the cable is continuously fed or retracted based on the rotation direction, enabling faster cable deployment compared to manual pushing or pulling methods. The mechanical system converts rotational input into linear cable movement efficiently.
Data Source
AI summary
The present disclosure provides a drain auger than includes a drum with an accessory attachment. A pole attachment is coupled to the drum. A cable is extendable and retractable relative to the drum. An actuator is operatively coupled to the cable and a motor is operably coupled to the actuator. A mode selector is coupled to the drum and includes an auto-feed mode. The auto-feed mode is configured to selectively and automatically extend and retract the cable relative to the drum in response to actuation of the actuator.