Door damper
From DDL Wiki
(Difference between revisions)
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== Primary Stakeholders and Product Needs == | == Primary Stakeholders and Product Needs == | ||
+ | |||
+ | Consumers are building owners who must absorb cost of original door damper, instillation, as well as maintenance costs and replacement. Also must consider installers (construction workers), maintenance workers, and building planers. | ||
+ | |||
+ | {| class="wikitable collapsible" border="1" cellspacing="0" align="center" style="text-align:center" | ||
+ | |- | ||
+ | ! Stakeholder | ||
+ | ! Needs | ||
+ | |- | ||
+ | | Consumer | ||
+ | | | ||
+ | *Low Cost | ||
+ | *Reliable | ||
+ | *Ergonomic - easy to push door open and closes door at safe speed | ||
+ | *Maintainable | ||
+ | *Easily Installable | ||
+ | *Appearance - Do not want something too large or distracting | ||
+ | *Safe for users and maintenance personnel | ||
+ | |- | ||
+ | | Retailers | ||
+ | | | ||
+ | *Returns a profit | ||
+ | *Easy to store and move | ||
+ | *Replacement parts | ||
+ | *Durability | ||
+ | *Reasonable price | ||
+ | |- | ||
+ | | Manufacturers | ||
+ | | | ||
+ | *Use of stock parts if possible | ||
+ | *Few components to reduce production costs | ||
+ | *Inexpensive materials and processes | ||
+ | *Easily manufactured materials | ||
+ | *Easily assembled | ||
+ | |- | ||
+ | | Shipping/Transport | ||
+ | | | ||
+ | *Lightweight and small – reduce fuel costs and space requirements | ||
+ | *Not easily broken – no special shipping considerations | ||
+ | |} | ||
Revision as of 13:27, 17 September 2012
Contents |
Executive Summary
Primary Stakeholders and Product Needs
Consumers are building owners who must absorb cost of original door damper, instillation, as well as maintenance costs and replacement. Also must consider installers (construction workers), maintenance workers, and building planers.
Stakeholder | Needs |
---|---|
Consumer |
|
Retailers |
|
Manufacturers |
|
Shipping/Transport |
|
Product Function and Evaluation
List of Parts
Part # | Part Name | QTY | Function | Manufacturing Process | Material | Weight (g) | Image |
---|---|---|---|---|---|---|---|
Body | |||||||
1 | Shell | 1 | Contain other parts and hydraulics | Cast | Aluminum | 715 | pic here |
2 | Rack | 1 | Move through viscous fluid and create damping | Cast/machined | Steel | 352 | rack pic here |
3 | Pinion | 1 | Transmit motion | Cast/Machined | Stainless Steel | 150 | Pinion pic here |
4 | Spring | 1 | Return door to closed position | Drawn | Steel | 218 | spring pic here |
5 | Side Cap with bearing | 2 | Allow pinion to rotate | Casting | Aluminum | 24 | Side cap picture |
6 | End Cap | 1 | Keep fluid contained, allow access for assembly | Cast | Aluminum | 1 | End Cap Picture |
7 | O-ring | 1 | Keep fluid contained, prevent leaks | Extruded and vulcanized | Rubber | <1 | o ring Picture |
Linkage | |||||||
7 | Large arm | 1 | Connect to door base | Cast | Steel | 374 | large arm pic here |
8 | Small arm | 1 | Connect to doorframe | Cast | Steel | 81 | small arm pic here |
9 | Threaded arm | 1 | connect to doorframe base/ adjust length of linkage | Cast | Steel | 116 | threaded arm pic |
10 | Washer | 1 | Hold linkage together | Stamped | Steel | 3 | Washer pic here |
11 | Nut | 1 | Hold threaded arm to short arm | Cast | Steel | 6 | nut pic here |
12 | Short screw | 1 | Hold linkage together | Cold headed and machined | Steel | 3 | Short screw pic here |
13 | Standoff | 1 | Connect to doorframe | Stamped and bent | Aluminum | 6 | Standoff pic here |
14 | Arm screw to box | 1 | Hold long arm to base | Cold headed and machined | Steel | 6 | arm screw to box pic here |