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| - | [[Image:Shredder.jpg]]<br /> | + | #REDIRECT [[paper shredder]] |
| - | "Shredder (sometimes The Shredder) is a fictional character in the Teenage Mutant Ninja Turtles universe. He is a villainous ninjutsu master called Oroku Saki who, at one point or another in every incarnation of the TMNT franchise, has been the main enemy of Splinter and the Turtles."<br />
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| - | http://en.wikipedia.org/wiki/Shredder_(TMNT)
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| - | =Product Study=
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| - | ==Product Dissection==
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| - | The following notes were taken prior to and during [[product dissection]].
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| - | ==Function/Purpose:==
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| - | Shreds paper or credit cards placed correctly into feeders
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| - | * Increase security/privacy – not able to easily retrieve information from shredded items
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| - | * Facilitate disposal – reduce volume of garbage
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| - | * Produce confetti
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| - | * Substitute for a recycling bin
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| - | ==Inputs/Outputs:==
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| - | * Material Inputs: Paper, Staples, Credit Cards
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| - | * Information Inputs: Direction of motor rotation
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| - | * Energy Inputs: 120V AC
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| - | * Material Outputs: Shredded material inputs
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| - | * Information Outputs: Operation status
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| - | * Energy Outputs: Heat, Noise, Light
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| - | ==Use:==
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| - | 1. Scale moved to where weighing takes place (ground) - NOTE: Shaking – noise made
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| - | <br>2. Observed zero reading of dial (does it need calibrating)
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| - | <br>3. Calibration – locate calibration dial, turn dial until zero lines up with red line
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| - | <br>4. Steping on the scale
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| - | * Orientation of the feet around the dial window
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| - | * Even distribution of weight
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| - | * One foot first, then the full weight
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| - | <br>5. Wait for dial to reach equilibrium
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| - | <br>6. Read the number that lines up with the red line
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| - | ==Different Users / Use Scenarios==
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| - | * Weighing objects
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| - | * Balance difficult in stepping
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| - | * Weight beyond capacity
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| - | * Body shape in the line of vision
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| - | * Different eyesight
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| - | * Lighting
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| - | * Flat surface
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| - | * Calibration tasks, difficult for Parkinsons, limited hand-eye coordination
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| - | ==Functional Operation:==
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| - | 1. Force applied to cover
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| - | <br>2. Angle brackets transfer force to levers
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| - | <br>3. Levers amplify the force and transfer to the spring plate
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| - | <br>4. Spring compresses proportionally to the force applied
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| - | <br>5. Pivot transfers vertical motion of the spring plate to the horizontal motion of the rack (amplifies as well)
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| - | <br>6. Rack and pinion translates linear motion into rotational motion
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| - | <br>7. Rotational motion is read out on the dial
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| - | {| class="wikitable" border="1"
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| - | ! Part # !! Part name !! QTY !! Function
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| - | | 001 || Angle bracket || 4 ||
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| - | * Transfer force to the levers
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| - | * Provide support for applied force
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| - | * Locate cover on base assembly
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| - | | 002 || Cover plate || 1 ||
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| - | * Provide surface for stepping
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| - | * Enclose/protect mechanical components
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| - | * Allow unobstructed view of dial
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| - | * Provide aesthetic definition
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| - | * Distribute applied force to angle brackets
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| - | * Provide anchor points for window, bracket, and springs
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| - | | 003 || Lower lever || 2 ||
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| - | * Amplify and translate force from the angle bracket
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| - | * Locate cover (angle brackets) on base assembly
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| - | |}
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| - | [[Category:Design studies]]
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