Paper shredder
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=Product Study= | =Product Study= |
Revision as of 12:45, 24 January 2007
Contents |
Product Study
Product Dissection
The following notes were taken prior to and during product dissection.
Function/Purpose:
Shreds paper or credit cards placed correctly into feeder
- Increase security – not able to easily retrieve information from shredded items
- Facilitate disposal – reduce volume of garbage
- Produce confetti
- Substitute for a recycling bin
Inputs/Outputs:
- Material Inputs: Paper, Staples, Credit Cards
- Information Inputs: Direction of motor rotation
- Energy Inputs: 120V AC
- Material Outputs: Shredded material inputs
- Information Outputs: Operation status
- Energy Outputs: Heat, Noise, Light
Use:
1. Scale moved to where weighing takes place (ground) - NOTE: Shaking – noise made
2. Observed zero reading of dial (does it need calibrating)
3. Calibration – locate calibration dial, turn dial until zero lines up with red line
4. Steping on the scale
- Orientation of the feet around the dial window
- Even distribution of weight
- One foot first, then the full weight
5. Wait for dial to reach equilibrium
6. Read the number that lines up with the red line
Different Users / Use Scenarios
- Weighing objects
- Balance difficult in stepping
- Weight beyond capacity
- Body shape in the line of vision
- Different eyesight
- Lighting
- Flat surface
- Calibration tasks, difficult for Parkinsons, limited hand-eye coordination
Functional Operation:
1. Force applied to cover
2. Angle brackets transfer force to levers
3. Levers amplify the force and transfer to the spring plate
4. Spring compresses proportionally to the force applied
5. Pivot transfers vertical motion of the spring plate to the horizontal motion of the rack (amplifies as well)
6. Rack and pinion translates linear motion into rotational motion
7. Rotational motion is read out on the dial
Part # | Part name | QTY | Function |
---|---|---|---|
001 | Angle bracket | 4 |
|
002 | Cover plate | 1 |
|
003 | Lower lever | 2 |
|