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DESIGN PROJECT I: Electric ToothbrushKara Morgan, Valentine Asalu, Joe Gray,
Alex Morgan
OCTOBER 10, 2012
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Concept Generation
• Customer Needs Assessment
• External Search1. Labs 1 & 22. Patent Search3. Product Archaeology4. Benchmarking
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Concept Generation (cont.)
• Morphological Charts
• Pugh Charts
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Project Management (collective)
• Customer Needs Assessment• Labs 1 & 2• Concept Generation• Concept Selection
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Product Management (specialized)
Alex Product Archaeology
Pugh Charts
Kara Customer Needs
Morphological Charts
Valentine Product Benchmarking
Problem Statement
Joe Patent Search Solid Works Design
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Hierarchical Customer Needs
Figure 1. AHP Pairwise Comparison Chart to Determine Weighting for Main Objective Categories
Figure 2. AHP Pairwise Comparison Chart to Determine Weighting of Quality Sub-
Objectives
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Revised Problem Statement
After having assessed the niche “green” market, the design team has identified the key consumer demands to be included in the final concepts of the electric toothbrush redesign. Ultimately, we will employ these demands in order to produce a final product that is more sustainable with regards to both customer satisfaction and environmental conscientiousness. In particular, based on the assessment of the market demands, the project will proceed with particular emphasis on the aspect of quality, namely effectiveness, the category and sub-category of which were proven to be the most critical features according to the consumers surveyed.
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Benchmarking/Patent Searches We based our searches on three criteria;
Cleaning, Packaging, Aesthetics. We researched different companies to see what patents and designs they already had on the market.
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Benchmarking/Patent Searches: The Gillette Company
US 7, 636, 977 B2Jan. 26, 2010
US 3,220,543Nov. 30, 1965
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Benchmarking/Patent Searches: Colgate-Palmolive Company
US D475,529 SJune 10, 2003
US D476, 157 SJun. 24, 2003
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Benchmarking/Patent Searches: Phillips Company
US 6,463,615 B1Oct. 15, 2002
5, 836, 030Nov. 17, 1998
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Brush Head Design Concepts
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Human Factors Body Design
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Human Factors Body Design
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Power Generation and Power Accessories
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Power Generation and Power Accessories
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Energy Mechanism for Brush Head
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Energy Mechanism for Brush Head
Concept 1: Has jet stream of water to wet the toothpaste. None of the bristles rotate
Concept 2: One of the bristles rotate in a circular motion while the other set of bristles move in a lateral motion.
Concept 3: The brush has toothpaste dispenser built into it.
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Previous Concepts
Accepts energy Stores energy
Chemical (battery)
Electrical
Top-loaded battery compartment
Bottom-loaded battery compartment (with battery cap)
Flip-open central battery compartment
Rechargeable battery unit
Wall outlet
Power Generation and Power Supplies
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Previous Concepts
Body thickness
Grip shape Grip location
Slim
Bulky
Smooth
Form-fitted
Front
Back
Side
Human Factors Body Design
On/off mechanism
Buttons Location
Switch
Button
One button
Two buttons
No buttons
Front
Back
Side
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Previous Concepts
Brush head function Motion Rotation
Rotational
Linear
Rotational
Linear
Full rotation
Partial rotation
No rotation
Energy Mechanism for Brush Head (function)
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Previous Concepts
Number of heads Shape combinations Orientation
One head
Two heads
Three heads
Circular
Rectangular
Circular and non-circular
Circular and circular
Circular and two rectangular
Two circular and one rectangular
Three circular
Angled
Linear
Brush Head Design
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Concept Selection4 Factors
- environmentally friendly
- quality
- cost
- comfort
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Body Design Pugh Chart
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Results
Body Grip Grip Location
# of Buttons Button Location
Concept 4 Slim Form Fitted Front 2 Front
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Energy Mechanism Brush Head Pugh Chart
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Results
Movement Defined Movement
Concept 1 Rotational Full Rotational
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Power Generation Pugh Chart
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Results
Type Type Detail
Concept 4 Electrical Wall Outlet
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Brush Head Design Pugh Chart
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Results
# of heads Head Type Angled?
Concept 2 2 Circular & non-circular
Yes
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Final DesignPower Generation• Electrical source
(wall outlet)
Power Accessories• Charging station
Energy Mechanism for Brush Head
• One fully rotational head
• One linear head
Brush Head Design• 2 Heads
• One round, one rectangular
• Slightly angled for effectiveness
Human Factors Body Design
• Slim body
• Form fitted
• Front grip (frontal grooves)
• Two buttons on front
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Final Design(excluding bristles)
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Final Design1. Angled toothbrush heads
2. Circular fully rotational head
3. Rectangular linear head
4. On button
5. Off button
6. Form fitted grips
7. Rechargeable location
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Final Design MultiView
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Final Design Dimensions
Top View
Side ViewFront View
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How Does it Work?Our finalized product is designed to eliminate the
complications associated with electric toothbrushes.
• Activation begins after pressing the on button, and activity concludes either after 2 minutes or after the off button is pressed.
• Simultaneously, the brush heads work together in order to eliminate plaque from teeth.
-One rotational and one linear moving head will ensure that tooth cavities will be penetrated and a necessary surface area can be covered.
-They are also set at a slight angle to increase penetration
• Power is generated from electrical power source.
-Toothbrush charges while sitting upright in a charging station.
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Final remarks
• Does final product address customer needs?o Comforto Environmentally soundo Convenienceo Quality
Durable replacement parts Mechanically durable Lasting charge life Effectiveness