Hand Mixer

The primary function of the hand mixer is to mix food (eggs, cake, etc.) by using a small motor to rotate two beaters.

User requirements:

• Mixes foods
• Is handheld and ergonomic
• Appearance is acceptable

Engineering specifications:

• maximum weight
• minimum mixer speed
• variable speed

Parts

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The table below contains the Bill of Materials for the Durabrand Hand Mixer:

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Table 1: Durabrand Mixer Bill of Materials

Part #	Part Name	Category	Function	Material	Picture
1	External Switch	Input	Turns on and changes the speed of the mixer	ABS plastic	[[1]]
2	Eject button	Input	Ejects the beaters	ABS plastic	[[2]]
3	Ejector springs	Other	Returns button back to unpressed position	Metal	[[3]]
4	Case	Structural	Seperates inner parts from user and provides an ergonomic handle	ABS plastic	[[4]]
5	Switch	Input	Allows different amounts of current to enter the motor	copper and plastic	[[5]]
6	Magnet	Transmission	Creates a magnetic flux to make the current carrying copper wire in the motor rotate	ABS plastic	[[6]]
7	Fan	Other	Cools motor by sending air past it	ABS plastic	[[7]]
8	Motor	Input	Converts electrical energy into mechanical rotation energy	Mostly Copper	[[8]]
9	Gearshaft	Transmission	Carries rotational power from motor	Plastic	[[9]]
10	Gears	Transmission	Changes the shaft roatation from the motor into 2 parallel rotations	Metal	[[10]]
11	Power cord	Input	Plugs into wall and provides AC current	Copper and rubber	[[11]]
12	Beaters	Output	Mixes food	Metal	[[12]]
13	Wires	Input	carries current from switch to motor	Copper and rubber	[[13]]
14	Screws	Structural	Holds various pieces together	Metal	[[14]]