Umbrella
From DDL Wiki
Contents |
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
Bullet list to identify major DFA decisions.
- Starting with a colon indents a paragraph.
- Here are some things that they did well:
- Thing 1
- Thing 2
- Thing 3
- Here are some things that they could improve on.
- Thing 1
- Thing 2
- Thing 2.1
- Thing 2.2
- Thing 3
DFM
Here's an external link.
Here's an external link to a Excel to Wiki converter.
Here's the Wikipedia editing page. DDWiki and Wikipedia both run on MediaWiki software.
Here's an internal link back to the Main_Page. Using piping | lets you rename a link to, for example, the main page.
If you don't want something formatted, try using these HTML tags. Then you can put things like [[Main_Page]] into the document.
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 |
Here's a horizontal line
And another
They come free with section headings