Wall-Mounted Back Scrubber with Motorized Horizontal Brush Movement
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Solution Overview
Problem
Current back scrubbers lack an adjustable speed brush that can move horizontally from right to left and left to right, requiring users to move to reach all areas of their back, particularly posing challenges for elderly and disabled individuals who struggle with bathing.
Innovation Solution
A wall-mounted brush assembly with an upper and lower carriage rail assembly, stepper motor, and pulley system, allowing the brush to move horizontally with adjustable speed control via a panel or remote, and featuring suction cups for secure mounting and a rechargeable battery for operation, ensuring water protection and ease of use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a back scrubber is mounted on the shower wall with a fixed brush position, then the device structure is simple, but the user cannot reach all areas of their back without moving
Solution Approach 1:
The brush assembly is designed to move horizontally along the curved surface of the user's back, transitioning from a static fixed position to a dynamic movable system. The motorized carriage mechanism enables the brush to traverse the back area automatically, allowing users to remain stationary while achieving complete back coverage.
Solution Approach 2:
The brush assembly moves along a curved path that combines horizontal translation with vertical arc motion, effectively utilizing two-dimensional movement on the three-dimensional curved surface of the human back. This dimensional approach allows comprehensive coverage of the back surface area.
2Adaptability or versatility
If the brush moves at a fixed speed, then the mechanical system is simple, but the user cannot adjust the scrubbing speed to their preference or comfort level
Solution Approach 1:
The system incorporates variable speed control capability that allows adjustment of the brush movement speed parameter. The motor controller responds to user input signals to modify the rotational speed, thereby changing the linear speed of the brush assembly along the carriage rails to match user preferences and comfort requirements.
3Reliability
If the carriage rail assemblies are exposed to water, then the structure is open and easy to clean, but the mechanical components are damaged by water
Solution Approach 1:
A waterproof cover structure is designed to enclose the upper and lower carriage rail assemblies, forming a protective barrier against water ingress. The cover allows the mechanical components to remain protected while maintaining structural integrity and preventing corrosion or damage from shower water exposure.
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
Enables thorough back scrubbing without user movement, accommodating elderly and disabled users by providing a secure, adjustable, and water-resistant solution for back hygiene, enhancing accessibility and convenience.
Implementation Method 1
The frame mounts onto the shower wall through the use of suction cups
Data Source
AI summary
The core components of the invention are a frame, an upper carriage rail assembly, a lower carriage rail assembly, a brush, and two motor assemblies. The carriage rail assemblies are housed within a waterproof cover. The top of the cover is configured as a hood to protect the upper carriage rail assembly from water damage. The frame mounts onto the shower wall through the use of suction cups. The carriage assembly attaches to the frame through the use of screws on the frame and keyhole shaped mounting holes on the cover. The brush mounts onto an upper carriage assembly and a lower carriage assembly through the use of flanges. A stepper motor located on the upper carriage assembly drives a pulley system, allowing the brush to move horizontally from left to right and then from right to left. A panel of control buttons provide start and stop options, allowing the operator to increase or decrease the speed of the horizontal movement of the brush across the upper and lower carriage rails, and permitting the operator to start and stop the brush motion.