Umbrella

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Contents 1 Umbrella 2 Parts List 3 DFA 4 DFM 5 FMEA 6 Next section title 6.1 More bars = lower sublevel.

Umbrella

Basic introduction information. 'Contents' box is created automatically. To skip directly to a section, use Umbrella#FMEA to create a link.

Parts List

Part #	Part Name	Qty	Weight	Function	Manufacturing Process	Material	Picture
1	Shaft	1		Main support unit for umbrela	Laminated, turned	Wood
2	Handle	1		Provides a comfortable grip for shaft	Laminated, warped	Wood
3	Tip	1		Protects shaft & Aesthetic	injection molded	Plastic
4	Top Cap	1		Holds canopy to shaft	Stamped	Steel
5	Top Cap Retention Pin	1		Attaches top cap to shaft	Formed	Steel
6	Top Cap Skirt	1		Prevents water leakage around top cap	Woven	Nylon
7	Rider Limit Pin	1		Prevents upper assembly rider from traveling out of range	Formed	Steel
8	Rider Latch	2		Locks rider in place at top and bottom of range	Stamped	Steel
9	Rider Latch Pin	2		Attaches rider latch to shaft	Extruded	Steel
10	Canopy section	8		Keeps water from entering area below umbrella	Woven	Nylon
11	Canopy Latch Strap	1		Thins trap to wrap around canopy when closed	Woven	Nylon
12	Canopy Latch Strap Velcro	1		Allows canopy latch strap to attach to itself		Velcro
13	Upper Hub	1		Attaches arms to shaft	injection moulded	Plastic - abs?
14	Hub Pin	1		Attaches upper hub to shaft	Formed	Steel
15	Bumper	1		Reduces jarring at end of rider travel	injection moulded	Rubber
16	Connecting wire	2		Attaches arms to upper hub and rider	Extruded	Aluminum
17	Rider	1		Attaches arm support rod to shaft; allows motion along shaft and attaches to latch	injection moulded	Plastic
18	Arm Mainshaft	8		Attaches canopy to upper hub	Extruded, stamped	Steel
19	Arm Support Rod	8		Attaches rider to arm mainshaft	Stamped, formed	Steel
20	Arm Support Rod Insert	16		Inserts into end of support rod; adds strength at crimp point	Extruded	Steel
21	Arm Endcap	8		Covers exposed end of arm mainshaft	Die cast	Steel
22	Short string	16		Loops between canopy and arm mainshaft/endcap to provide attachment	Spun	Cotton
23	Arm Joint Connector	8		Connects arm mainshaft and support rod, allows rotation between the two	Stamped, crimped	Steel
24	Arm Joint Connector Pin	8		Connects arm joint connector to support rod	Extruded	Brass

DFA

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    • Thing 2.1
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  • Thing 3

DFM

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FMEA

Item or Function	Failure Mode	Effects of Failure	S	Causes of Failure	O	Design Controls	D	RPN	Recommended Actions	Responsibility
Shaft	Splintering	Decreased shaft strength	5	Wear	3	Coating or finish on shaft	4	60
		Potential safety hazard to user				Material choice
						Durability testing
	Breakage	Product is inoperable	8	Inappropriate stresses on shaft	1	Material Quality	5	40
				Impact		Robust Design
	Rot	Reduced Strength	3	Poor Protective Coating	1	Coating Process Control	5	15
Handle	Splintering	Decreased handle strength	7	Wear	4	Coating or finish on handle	4	112
		Potential safety hazard to user				Material choice
						Durability testing
	Breakage	Product is inoperable	7	Impact	1	Material Quality	5	35
						Robust Design
	Rot	Reduced Strength	3	Poor Protective Coating	1	Coating Process Control	5	15
Tip	Loss of Protection	Degredation of Shaft	2	Wear	4	Material choice	7	56
						Part Design
Top Cap	Corrosion	Decrease In Aesthetics	2	Oxidation	2	Material choice/Coating	5	20
Top Cap Retention Pin
Top Cap Skirt
Rider Limit Pin
Rider Latch	Bending	Latch fails to operate	8	Inappropriate Loading	1	Part Design	2	16
	Jamming	Latch fails to operate	8	Corrosion/Foreign Debris/Poor Assembly	2	Tolerance control	4	64
Rider Latch Pin	Loss	Potential Loss of Latch	5	Vibration/Poor Assembly	1	Proper Assembly	2	10
Canopy section	Tear	Leak in Umbrella	7	Improper Manufacturing/Improper Storage by Consumer	5	Material Selection/Manufacturing Control	4	140
	Seam Failure	Leak in Umbrella	7	Improper Manufacturing	3	Manufacturing Controls	6	126
Canopy Latch Strap	Seam Failure	Inability to strap umbrella	5	Improper Manufacturing	3	Manufacturing Controls	6	90
Canopy Latch Strap Velcro
Upper Hub
Hub Pin	Loss	Upper Hub not longer attached to shaft	8	Improper Tolerancing/Manufacturing	1	Proper Tolerancing/Manufacturing	2	16
Bumper
Connecting wire	Breakage	Arms disconnect from shaft	8	Wear	1	Coating/Material Selection	6	48
Rider	Button Breakage	Latch more difficult to operate	6	Fatigue	2	Proper Tolerancing/Manufacturing	3	36
Arm Mainshaft	Plastic Yielding	Deformed umbrella shape/trouble closing	7	Excessive Loading	6	Part Design/Material Selection	4	168
Arm Support Rod	Plastic Yielding	Deformed umbrella shape/trouble closing	8	Excessive Loading/Impact	6	Part Design/Material Selection/Manufacturing	4	192
Arm Support Rod Insert
Arm Endcap	Disassociation from Arm	Partial Canopy Detatchment/Exposed Rod	7	Insufficient Crimping/Tolerances	5	Manufacturing and Assembly Controls	3	105
Short string	Snap	Partial Canopy Detatchment	7	Excessive Loading/Defective Materials/Poor Manufacturing	3	Material Quality/Manufacturing	5	105
Arm Joint Connector	Plastic Yielding	Non-smooth operation	2	Excessive Loading	2	Part Design/Material Selection/Manufacturing	2	8
	Seperation from Arm	Impaired operation of umbrella	8	Improper Manufacturing	3	Manufacturing and Assembly Controls	3	72
Arm Joint Connector Pin

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