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Toothbrush Design P roject

Toothbrush Design P roject. February 20, 2013 David Alvarado Ethan Kruder Kirk Santure Jessica Spoll. Design Process. Initial Problem Statement Customer Needs Assessment Hierarchal Customer Needs Pairwise Comparison Chart Weighted Hierarchal Customer Needs

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Toothbrush Design P roject

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  1. Toothbrush Design Project February 20, 2013 David Alvarado Ethan Kruder Kirk Santure Jessica Spoll

  2. Design Process • Initial Problem Statement • Customer Needs Assessment • Hierarchal Customer Needs • Pairwise Comparison Chart • Weighted Hierarchal Customer Needs • Revised Problem Statement • External Search • Product Dissection • Patent Search • Product Archaeology • Benchmarking • Concept Generation • Morphological Charts • Pugh Charts / Concept Selection • Final Design

  3. Project Management

  4. Hierarchal Customer Needs Revised Problem Statement: Our mission is to redesign an electric toothbrush so that it is sustainable and consumer friendly. According to the customer assessments, it is important that the toothbrush have a rechargeable battery and be somewhat lightweight. It is also important that the bristles be uniquely designed to be better at cleaning teeth and increasing dental hygiene. Our design will also aim to improve the grip, and to make it more ergonomic and user-friendly.

  5. External Search • To aid our redesign process, we collected external research: • History of electric toothbrushes on the market • Cost of other products on the market • Patented features already in existence • We completed benchmarking tables with information about features of other electric toothbrushes on the market: • Battery life • Noise level • Bristle Design • Grip

  6. Benchmarking Charts These charts helped us determine which features made other existing toothbrushes successful, and thus were used to help us with our concept generation.

  7. Brush Head Design Dual action head Outside spins clockwise, inside spins counter clockwise Split head design Inner and outside section oscillate independent of each other Inner circle of bristles oscillate Intricate bristle design rotates clockwise

  8. Human Factors and Body Design Finger grips on the side enhance ability to grip toothbrush Grip has space on back for fingers Grip design provides space for thumb and index finger Design similar to non-electric toothbrush, very skinny and easily fits in your hand Basic electric toothbrush design with a curved grip and square bottom Toothbrush shape is wide in the middle and tapered at the ends

  9. Energy Mechanisms for brush head Motor with a piston that fires vertically causing the brush head to oscillate Drive shaft system, the wheel on the bottom will rotate causing the brush head to spin Conveyor belt system constantly spins head in one direction Magnetic drive shaft, magnets will push and pull drive shaft connected to brush head Pulley system will allow cables to twist brush head Servomotor will spin the head and then return to its original position

  10. Power Generation and Power Accessories USB charger, plugs into outlet and bottom of toothbrush Multiple battery packs that can be easily removed and put on charger Charger that is powered by solar panel Charging basket provides a place to wirelessly charge toothbrush and store toothpaste Charging station allows for storage and charging of battery Charger is connected to hamster wheel for unlimited power source

  11. Morphological Chart

  12. Morphological Chart

  13. Morphological Chart

  14. Concept Selection and Pugh Charts Brush Head Design

  15. Concept Selection and Pugh Charts Energy Mechanism for Brush Head

  16. Power Generation

  17. Concept Selection and Pugh Charts Body Design and Human Factors

  18. Concept Selection and Pugh Charts • We averaged the rankings from each iteration to get the top ranked concept in each category to get our final design.

  19. Final Toothbrush Designand How it Works • For the head we have an alternating rotation of the bristles. Outside bristles rotate in the opposite direction of the inside bristles. • The body features an ergonomic handle built for comfort. • It comes with a charging base that can be plugged into the wall. • The toothbrush is powered by a servomotor which spins the head of the toothbrush.

  20. Concluding Remarks

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