Bike pump

From DDL Wiki

Revision as of 19:04, 18 September 2012

Figure 1: Competitor product used for dissection study

Executive Summary

This will be a brief executive summary that describes the key findings and recommendations.

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elementum elit vel tortor scelerisque auctor. Donec urna dui, eleifend eget adipiscing vulputate, feugiat id nisl. Donec mattis, quam in tincidunt ullamcorper, orci tellus condimentum dui, aliquet faucibus risus nunc et nunc. Vestibulum metus justo, volutpat sed consequat eget, mollis sed neque. Maecenas dignissim hendrerit malesuada. Aliquam dictum gravida orci ut rutrum. Fusce eros lectus, accumsan sed rhoncus eu, tempor sed magna. In ac lacus urna, ut cursus nisl. Curabitur ac dui nisl, in imperdiet orci. Aliquam quam dui, tincidunt quis volutpat quis, convallis a ipsum. Suspendisse quis molestie lorem. Nunc vel magna commodo nunc viverra tempor id blandit neque. Donec nec elementum ligula. Cras accumsan, urna eget dictum varius, arcu nunc porttitor tortor, sit amet feugiat nisl elit vitae elit. Proin eget tellus lectus, tempus tincidunt augue. Sed sagittis iaculis orci, sit amet tempus dui tincidunt in.

Product Stakeholders

We have identified possible needs and wants for all possible stakeholders. The identified needs are those needs that are essential in order to encourage the stakeholder to use it. The identified wants are additional features that may benefit the stakeholder, however, they are not vital to the use of the product. For the purpose of this study, the consumer is the person pumping up the bike tire, not necessarily the bike owner.

Product Use Study

This is where we will document in detail how the product is used, step by step, and summarize findings from our user studies with photo documentation.

Product Mechanical Function

We will include some pretty diagrams and information about the mechanical function of our part.

Assembly

This is where we will have information/photo about the major assembly.

An exploded view of the floor bike pump will be inseted here... with all components labeled.

Sub-Assembly

We may need to include detailed sub-assembly photos and information here.

This is where we will insert exploded views of each internal sub-assembly with labeled components and a brief summary of each sub-assembly function.

Bill of Materials

The following is a bill of materials from the bike pump dissection. The parts can be sorted based on part number, quantity, weight or material by clicking on the appropriate tab at the top of the table.

Part Number	Name	QTY	Weight (g)	Function	Material	Manufacturing Process	Image
1	Screw	5	4	Holds base support (#8) in place to metal base (#31)	Steel	***	Screw
2	Nut	5	1	Attaches screws (#1) to metal base (#31)	Steel	***	Nut
3	Rubber readout cover	1	30	Holds plastic readout cover (#4) in place above pressure gauge mechanics (#23)	Rubber	***	Rubber readout cover
4	Plastic readout cover	1	12	Provides clear screen and protection to number dial readout (#10)	Plastic	Injection Molding	Plastic readout cover
5	Metal connection valve tip	1	5	Holds rubber connection valve tip (#6) in place	Aluminum	Press Molding + Threading	Metal connection valve tip
6	Rubber connection valve tip	1	2	Creates seal onto bike tube valve	Rubber	***	Rubber connection valve tip
7	Air hose holder (double)	1	12	Holds air hose (#32) to main tube (#30) during storage	Plastic	Injection Molding	Air hose holder (double)
8	Plastic base support	1	10	Reduces cantilever stresses on outer arm tube	Plastic	Injection Molding	Plastic base support
9	#7 O-Ring	2	< 1	Provides necessary friction to hold the double air hose holder (#7) onto outer arm tube (#30) and allow for vertical movement along axis of tube	Rubber	***	#7 O-Ring
10	Readout number dial	1	3	Provides a quantified tire pressure readout	Aluminum	Sheet Stamped	Readout number dial
11	Readout needle	1	< 1	Displays the quantified tire pressure on (#10	Aluminum	Press Stamped	Readout needle
12	#13 O-Ring	2	< 1	Provides seal on bike tube inside the pump stabalizer (#13)	Rubber	***	#13 Rubber seal
13	Pump stabalizer	1	13	Allows metal rod (#19) to move within the main tube (#30)	Plastic	Injection Molding	Pump stabalizer
14	Piston head	1	8	Acts as a pump to draw in air within the main tube (#30) and then compress the air	Plastic	Injection Molding	Piston head
15	Tube connector	2	4	Connects hose (#32) to nozzle (#***) and to the metal base (#31)	Plastic	Injection Molding	Tube connector
16	Air hose holder (single)	1	2	Holds air hose (#32) to main tube (#30) during storage	Plastic	Injection Molding	Air hose holder (single)
17	Handle bar	1	127	Allows user to apply downward force to draw and compress air in the main tube (#30)	Plastic	Injection Molding	Handle bar
18	End cap	2	6	Provides a covering to the ends of the handle bar	Plastic	Injection Molding	End cap
19	Metal rod	1	174	Connects piston head (#14) to the handle bar (#17)	Steel	Extrusion + Crimp	Metal rod
20	Stopper	1	< 1	Blocks airflow during upstroke	Rubber	***	Stopper
21	Spring	1	< 1	Pushes up stopper	Steel	Coiled Wire	Spring
22	O-Ring	1	< 1	Creates seal	Rubber	***	O-Ring
23	Pressure gauge mechanics	1	50	Converts air pressure to angular displacement	Copper	***	Pressure gauge mechanics
24	Small screw	2	< 1	Fixes pressure gauge housing	Steel	***	Small screw
25	Air flow director	1	49	Guides air flow from piston to hose	Plastic	Injection Molding + Threading	Air flow director
26	#27 O-Ring	1	< 1	Provides a seal to the hose-to-nozzle connector (#27)	Rubber	***	#27 O-Ring
27	Hose-to-nozzle connector	1	< 1	Allows air to flow from hose to nozzle	Plastic	***	Hose-to-nozzle connector
28	Seal between #25 & #29	1	< 1	Provides a seal between the air flow director (#25) and the base-to-hose (#29)	Rubber	***	Seal between #25 & #29
29	Base-to-hose connector	1	7	Provides a connection between hose (#32) and air flow director (#25)	Plastic	Injection Molding	Base-to-hose connector
30	Main tube	1	238	House piston	Steel	Injection Molding + Threading	Main tube
31	Metal base	1	540	Provides counter force from upstroke	Steel	Molded + Drill Pressed	Metal base
32	Hose	1	83	Encloses from base to nozzle	Rubber	***	Hose
33	Weighted handle insert	1	***	***	Aluminum	***	Weighted handle insert
34	Valve connection housing	1	***	Gripping surface	Plastic	Injection Molding	Valve connection housing
35	Valve channel	1	***	Channels air through handle	Plastic	Injection Molding	Valve channel
36	Tire interface valve	1	***	Puts air in tire	Steel	***	Tire interface valve
37	Readout housing	1	***	Protection of pressure gauge	Steel	Press Molded	Readout housing
38	Piston chamber end cap	1	***	Fixes main tube to base	Steel	***	Piston chamber end cap

Design for Manufacture and Assembly (DFMA)

• INCLUDE AN INTRODUCTION AS TO WHAT DFMA IS

Manufacturing

The competitor product we analyzed displayed numerous positive manufacturing features that would minimize cost and complexity. The overall design is surprisingly simple, a result of combining features into single parts where possible, using only a few different materials, and minimizing the overall part count. (INSERT COMPONENT WITH BIGGEST ROOM FOR IMPROVEMENT AND WHY).

Below are some of the DFM Guidelines and the observations we made of how our competitor designed their product with those guidelines in mind and some areas we believe they could improve.

Assembly

Assembly of the competitor's product is not the consumer's responsibility and occurs prior to the retail stages in the supply chain. The product requires tools and fasteners only where the piston chamber attaches to the base, and nearly all of the remaining interfaces are threaded. While minimizing toolage, this raises many challenges with orientation and radial symmetry where the assembly process could be made clearer. The variety of O-rings, springs, and cylinder diameters is another weakness that has room for improvement.

Due to the assembly process being deliberately separated from the consumer, ease of assembly is not a high priority and leaves room for redesign towards simplicity.

Failure Modes & Effects Analysis (FMEA)

• NEED TO INCLUDE INTO AS TO WHAT FMEA IS
• INCLUDE THE SCALE USED TO DETERMINE S/O/D VALUES
• THEN, ADD TO REFERENCE SECTION THE SOURCE FOR THE SCALE

Design for Environment (DFE)

Design for Environment (DFE) can help bring focus to specific areas when improving a design. By analyzing the entire life cycle, the areas of the largest impact can be determined and minimized.

*2002 USD

Production

Using the sporting and athletic goods manufacturing sector of EIO-LCA, we were able to estimate the environmental impact of producing the bike pump. The bike pump costs $50 today, which is about $39.04 in 2002. Power generation and supply has the largest contribution to the 613 mtCO2e per 1 million dollars spent in the sporting and athletic goods manufacturing category. Therefore we can estimate that for every bike pump produced 0.0239 mtCO2e is released into the environment, resulting in a minor $0.72 tax per pump.

Sector #339920: Sporting and athletic goods manufacturing

Economic Activity: $1 Million Dollars

Displaying: Greenhouse Gases

Number of Sectors: Top 10

INSERT CAPTION

INSERT CAPTION

NEED TO CITE: http://www.eiolca.net/cgi-bin/dft/display.pl?hybrid=no&first_level_sector=Other+Miscellaneous+Manufacturing&second_level_sector=339920&newmatrix=US430CIDOC2002&key=23253747582&value=2527872121&incdemand=1&selectvect=gwp&select_button1=Run+Model

Use

If the consumer purchases a bike pump, we can assume that they own at least one bike. Therefore we used the EIO-LCA Motorcycle, bicycle, and parts manufacturing sector to study the environmental impact of use of the pump. We estimated that today the average bike costs $300 which equates to about $234.27 in 2002. Our analysis approximated a small $3.82 tax per bike.

Sector #336991: Motorcycle, bicycle, and parts manufacturing

Economic Activity: $1 Million Dollars

Displaying: Greenhouse Gases

Number of Sectors: Top 10

INSERT CAPTION

INSERT CAPTION

NEED TO CITE: http://www.eiolca.net/cgi-bin/dft/display.pl?hybrid=no&first_level_sector=Vehicles+and+Other+Transportation+Equipment&second_level_sector=336991&newmatrix=US428PURCH2002&key=5727070922&value=1515705675&incdemand=1&selectvect=gwp&select_button1=Run+Model

Group Dynamic

Group 2: JR, Patrick, Dinesh, Lauren, Amber

Team Leader: Dinesh Ayyappan

DFMA Lead: Patrick Hogan

FMEA Lead: Jonathan Wong

DFE Lead: Amber Ohiokpehai

Wiki Page Programmer/Report Compilation: Lauren Milisits

References

This is where we should list any references that we used throughout the process of our report.