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Electric toothbrush for dummies

This powerpoint explains the technology behind an electric toothbrush in such way that everyone who reads this presentation understands everything as well, even for the ones who are not very familiar with technology.

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Electric toothbrush for dummies

  1. 1. electrictoothbrushfordummies<br />Elisa Bagein<br />
  2. 2. Today<br />
  3. 3. Types<br />Sonictoothbrush<br />
  4. 4. Types<br />Rotatingtoothbrush (oscillating)<br />
  5. 5. Toothbrush<br />Braun<br />Rotatingtoothbrush<br />
  6. 6.
  7. 7. What’sinside a toothbrush?<br />
  8. 8. What’sinside a toothbrush?<br />Exploded view<br />
  9. 9. The coil<br />Is a part of the transformer<br />Transformer: makes the toothbrush can recharge its batteries without any metal contact between the recharger and the toothbrush.<br />
  10. 10. batteries<br />Rechargablebatteries<br />Store the energyfrom the transformer<br />NI-MH-batteries<br /> - high energydensity<br /> - less ‘memory’ effect thanNiCad<br />3V <br />
  11. 11. MotoR<br />DC-motor<br />Converts electric flux<br /> into mechanical movement<br />
  12. 12. Cam and Gears<br />Convertsrotation (from the motor) intoanoscillatingmovement<br />
  13. 13. Cam and Gears<br />
  14. 14. Cam and Gears<br />
  15. 15. Brushheadinside<br />
  16. 16. Materials<br />Outer case<br /> rubber<br /> rubber <br /> => for grip, elastic<br /> ABS<br /> => high thixotropy<br />
  17. 17. Materials<br />Brushhead: ABS<br />Bristles: nylon and rubber<br />Gears: POM<br /> => greatfabricability<br /> => precisetoleranceondimensions<br />Holderparts: POM<br /> => verystrongbutalsoresilient/elastic<br />
  18. 18. Howitworks<br />

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