Find more resources to incorporate into these activities at www.jamesdysonfoundation.com
James Dyson Foundation teachers pack Whats in the box?

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WHATS IN THE
THE JAMES D YSON FOUNDATION EDUCATION BO X CAN BE BORROWED FOR UP TO F OUR WEEKS. IT CONTAINS:
1 X Dyson DC22 VACUUM CLEANER, COMPLETE WITH HOSE, WAND AND ACCESSORIES
7 X TURBINE HEAD FLOOR TOOLS

8 X TORX SCREWDRIVERS

1 X MINI FLAT OUT HEAD
POSTERS TO LIVEN UP YOUR CLASSROOM WALL
James Dyson Foundation teachers pack The Dyson Story

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THE DYSON STORY 1
I still find frustrations lurking around every corner. I dont think Ill ever stop questioning, dismantling things and looking for ways to improve technology. James Dyson
1.1James Dyson: artist or scientist?
At school, I opted fo r arts, put off by all the formulae in science. There was nothing lik e D&T on offer. In the fortnight following my last day at school , I resolved to become an estate agent, then a painter, a surgeon, an actor, and an artist again. I stum bled across engineering only by accident and was immediately deci ded on what I wanted to do: make things that work better. James Dyson

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d up note. was fe Post-It ger, Art Fry, e ges of Take th choir sin the pa al a rs from chemic In 1973 g his marke d at a new losin worke. He with ered a n book r not memb rded fo his hym , 3M, and re n disca d that this ny e compa that had be y realise Fr ive ties he ough. adhes proper y en s in g stick recisely the o page but bein rkers t had p a ky, failure o fix paper m hat was stic ed. dt et mov glu neede t be re ook: a and ymn b that it couldn homes his h icky sed in u st not so take is now ld. his mis und the wor T s aro office
I have not failed, I have found 10,000 ways that wont work.

1.2 FRUSTRATION

Frustration informs all James Dysons designs. In the 1970s, while renovating his house, James became frustrated with his traditional wheelbarrows instability and the furrows the narrow wheel left in his lawn. James designed an alternative called the Ballbarrow, which replaced the wheel with an air-filled plastic ball. Then, in 1978, another frustration: his vacuum cleaner wasnt sucking up the dirt from his carpet. Irritated, he took the machine apart to find out what was going wrong. He noticed that the vacuum bag wasnt full, as hed expected. On the contrary, it was very nearly empty, with only a thin layer of dust coating the inside of the bag. James realised that this dust was clogging the pores of the bag causing it to lose suction. Inspired by an industrial cyclone hed encountered during the manufacture of his Ballbarrow, James wondered if the same principle could be scaled down and made to work with a vacuum cleaner. The cyclone used centrifugal forces to spin dust out of the air if a vacuum cleaner could do this, thered be no need to rely on bags. James built a crude prototype out of his defunct Hoover Junior, cardboard and gaffer tape and found that there was something in his theory. It worked! James had invented the worlds first bagless vacuum. But it would take another five years and 5,126 further prototypes to arrive at the Dual Cyclone technology vacuum cleaner, the DCO1.

1.3 FAILURE

The design process is a cycle, rather than a straight line. Design, prototype, test, solve the problems found in testing, modify the design, prototype and test again and repeat until you get it right. While most people fear failure, James Dyson encourages it. The 5,127 prototypes that preceded the DCO1 vacuum cleaner were all failures. But James didnt give up; instead he learned something new from every prototype that didnt work. This approach has been adopted by the hundreds of Dyson design engineers who work with James today.

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1.4dyson today
Today more than 500 design engineers and scientists work in Dysons Research Design and Development Centre, in a small market town called Malmesbury in the South West of the UK.
The team work with James Dyson, and together they strive to find practical solutions to everyday frustrations. Their inventions can now be found in over 50 countries, from Germany to Japan. Meet some of the team at www.jamesdysonfoundation.com

Principal Engineer

Jons worked at Dyson for 10 years now and he still cant get enough of designing. His latest project was the Dyson DC22, a compact but powerful vacuum cleaner.
Idiscovered my love of designing and making when my grandfather showed me his workshop in his garden shed. He taught me how to use a lathe, and then I was hooked. Ive been fascinated by the way things work ever since. At school, I loved D&T because it was so different from trying to remember dates and formulae. The thing I love most about being a design engineer is the freedom to try out new ideas. You soon realise that you can learn as much from the failures as from the successes (and there are always more failures!) My proudest moments are seeing a product Ive been working on in the shops and listening to customers and store staff talking about it. I find it very hard to resist getting drawn into their conversations.
Name Jon Age 31 Lives Caerleon, Wales school Design and Technology, Physics and Geography university Engineering Product Design, Southbank University, London Occupation Principal Engineer

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New Product Innovation Engineer
Everything that Caroline does is top secret. Her team conceives new ideas for products by brainstorming and looking at problems that need solving.
I enjoyed D&T at school because it was a chance to daydream about things Id like to make, a chance to do some drawing and one of the only times at school where you could get totally absorbed in making things. I first realised I wanted to be a designer one summer holiday whilst working for a company which made measuring equipment. My job involved gluing little balls onto sticks. I found the process really frustrating and difficult, so in my lunchtimes I used bits of junk to design a better tool to help make the process quicker and easier. Today I get the most satisfaction from my job when I take a step back and dream about what the product Im working on will be like.

Name Caroline Age 27 Lives Gloucestershire school Design and Technology, Maths and Physics University Product Design and Manufacturing, Loughborough University Industrial Design Engineering, Royal College of Art Occupation New Product Innovation Engineer

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1.5 cyclone technology
James Dyson invented Dual Cyclone technology which doesnt rely on a bag or filter to trap the dirt consequently Dyson vacuums dont clog.
n. 1. eteo M rology An atmo spheric sy stem cha circulatio racterise n of air m d by the asses abo accompa rapid inw ut a low-p nied by st ard ressure c ormy, oft circulate enter, usu en destru anti-cloc ally ctive wea kwise in clockwis ther. Cyc the Nort e in the S lones hern Hem outhern 2. A viole isphere a Hemisph nt rotatin nd ere. g windst 3. ny o A orm. f various devices u materials sing centr. Like a D ifugal fo yson vac rce to sep uum clea arate ner. centripet al and ce ntrifugal n. force Imagine being in a car wh it feels en it goe like your s around e being fl a corner common ung again quickly ly known st the car as centrif force acti door. Th ugal forc ng on yo is is e. In reali u is centr (and seat ty, the ac ipetal forc belt) in th tual e. Witho e way yo travelling ut the ca u would in a straig r door have flow ht line. n out of the car, Centripe tal force is the forc and seat e exerted belt. It k on you b eeps you cleaner, y the car moving in the walls door a curve. of the bin force on In a Dyso and cyclo the movin n vacuum ne cones g airflow about ce exert cen. Ask you ntripetal tripetal r D&T o force. r physics teacher

cyclone

Traditional vacuum cleaners rely on bags with tiny pores, which are supposed to trap dust, yet allow air to pass through. But the dust can quickly block pores, obstructing airflow. This reduces the machines power to suck up the dirt in your carpet. Air is sucked in through the cleaner head and, when it enters the bin, starts to spin in a cyclone. As the air spins faster and faster, so does the dust. At high speeds, the dirt is flung out of the airflow, falling to the bottom of the bin where it collects. The airflow moves through the bin and passes through the shroud the perforated skirt where fluff and hair is captured. The air then proceeds through to an inner cyclone, where smaller particles of dust are separated. After its passed through the inner cyclone, the air now clean exits the vacuum cleaner.

Engineering specif ication Air Watts Pick up Hard Floo r Pick up Crevice Motion Force Noise Normal Noise Whisper Bin Volume Weight Size Pick up Wilton Car pet
200 74% 99% 104% 10/8 Neutons forward s/backwards 89 Average
78 dB(A) 1.21 Litres 4.81 Kilograms 292/255/397 Millimetres
The engineering specification doesnt stop at size, weight, air watts and bin volume either. We go right down to specifying the force needed to press each button and catch. Jon, Principal Engineer

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2.1.3Research and Idea Development So-called eureka moments are rare. Instead, ideas come from experimentation and sketching, from analysing problems with existing products and carrying out research into new technologies. This is all part of research, design and development, or RDD. Design engineers work in teams, sketching out and discussing their ideas. Sketching is an important communication tool. Drawings tend to be rough and ready but theyre an important bridge between the engineers concept and the next vital step creating basic 3D models.
2.1.4Creative Thinking Dyson engineers need to think creatively all the time. The most obvious example of where they use creative thinking is in these early stages of the design process when sketching new ideas, or developing a design brief. But creative thinking is just as important when problem solving later on in the development of a new product.
When desig n at Dyson b engineers ra ideas, they instorm new always sta r with the p roblem. Th t en they take a piece of paper and fold it into 16 squ ares, thinking c reatively t of every squa re with a p ill o solution. Try it your ssible self and see what y ou come u p with.
Use this tech nique as you think about th suggested in e problems section 2.1.8
Another technique is called negative brainstorming. Think about everything that could go wrong with a product. How could you design it better so that it doesnt go wrong?

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2.1.5 Designing with your user in mind who will use your design and how? Design engineers must never lose sight of the person wholl use the product theyre designing. Its important to consider that they may not always use it in the correct way. The catch The design engineers designing the DC22 thought a lot about how people use their vacuum cleaners, including how they carry them up stairs. On the DC22 you have to remove the clear bin from the chassis in order to empty it. The engineers studied how people replaced the bin on the chassis and noticed that many people attach the bin properly at the top, but not the bottom. Because the bin wasnt securely fixed, it meant that the chassis could become detached when the vacuum was picked up possibly causing damage or injury. The solution was an interlocking handle mechanism and a protruding tooth on the base of the bin. The tooth slots into a notch on the chassis and if this doesnt happen, the catch on the handle will not engage. This prevents the bin from being replaced on the chassis incorrectly. This is an example of poka yoke design. This is a Japanese phrase which means fail-safing or fool-proofing. The engineers were also worried that the bin might become detached accidently. So they also designed a locking mechanism on the handle of the bin itself so that the bin release button cannot be pressed when youre carrying the machine by the handle.

rolines Samples of Ca d inspiration research an Sac. for her Nap
USE AND DISPOSAL Dyson engineers are challenged to design the best performing technology with the fewest parts using complementary materials. By choosing materials which can be recycled, a designer can help prevent unnecessary landfill. In the European Community there is a directive called Waste Electrical and Electronic Equipment Directive or WEEE. Dyson products are collected at the end of their lifetimes and disposed of responsibly. Lifetime Ensuring a long lifetime for your product reduces its environmental impact. At Dyson, all vacuum cleaners come with a five year guarantee. Engineers have tested the machine to destruction, and redesigned it to withstand those tests. Theyre confident that it will last. If your product has a long life then your user wont need to replace it as often, which saves both waste and resources. FUNCTION If a product is well designed, it will do its job efficiently, without wasting energy. Cyclone technology means that Dyson vacuum cleaners are more efficient so they can afford to have a less powerful motor, but still do their job as well.
TECHNOLOGY AND ECOLOGY The technology that powers a product can make a real difference to its environmental impact. Solar cells can power electric cars and charge your mobile, and you can get a wind turbine that powers your TV. Dyson engineers worked for 10 years on a small, high efficiency motor, the Dyson digital motor. This is used in the Dyson Airblade hand dryer, which as a consequence uses up to 80 per cent less energy to dry hands than warm air hand dryers.

The Dyso

n Airblad

e hand

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design brief Activity

2.1.8 Student Activity Start with a frustration or problem that you want to solve. Write a design brief and make some sketches for a product that solves this problem. The brief needs to answer the following questions: What problem will your product solve? Who will use it? How will people use it? Does the product need to be a particular size or shape? What features will the product need?
Here are some ideas of themes: Think about your journey to school. What problems are encountered along the way? What would make it easier? Think about shelter. This could be shelter from the rain or wind, from the cold or from the sun. What problems do you encounter when you require shelter? Does your bike saddle get wet when you park it under the edge of the bike shed? Biomimicry means using nature as inspiration when designing. Think of Velcro fasteners and barbed wire. What might have inspired them? And looking outside, what qualities of nature might lend themselves well to one of your products or inventions? Bad design doesnt serve a purpose. It might create a problem rather than solve one. Maybe it makes somebody spend money unnecessarily does it require extra parts that otherwise wouldnt be bought? Design and sketch a bad design of your own. List the reasons why it is useless. Do you now have a better idea of what might make a good design?

student activity

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2.2 3d prototypin

2.2.1Card Modelling The engineers working on Dyson DC22 used card modelling to visualise their designs from the beginning when they drew up their vision specification. They continued building card models through the entire design process with every new idea came a new card model. Models give a good impression of how the design fits together and enable the engineers to see it from all angles. They also give an impression of how the design addresses the physical parameters and space theyre working with.
Once design engineers have identified an idea and sketched it out, the next step is to build a 3D prototype.
In the early stages, cardboard, glue and tape are used to construct layouts and model basic functions quickly and cheaply. As the design develops, computer aided design (CAD) software is used to plan the detail and create more complex prototypes that can be used for testing.
Card modelling is a simple yet important part of the design process. Think about the product you wrote the brief for in the previous section: why not grab some strong tape and cardboard and check it out in 3D?
dels One of the initial card mo for DC22. Engineers use existing plastic parts for the bits that wont change from previous machines.

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with an W e never come up find idea, prototype it and just it works perfectly. It that. doesnt happen like in But having the ideas t for 3D is really importan. helping us refine them Jim, Design Engineer
2.2.2Computer Aided Design (CAD) The next step is to use CAD software to draw the design in fine detail. All of the different parts are drawn on computer, enabling the engineers to build a more complicated prototype using automated machines like three or five axis milling machines or routers (you may have similar machines in your workshop) or selective laser sintering (SLS).
2.2.3Selective laser sintering (SLS) SLS is a very expensive process producing just one cyclone assembly costs several thousand pounds so its important that the design is very well developed before reaching this stage of prototyping. The CAD data is used by the SLS machine, which can build all the plastic parts needed for an accurate prototype. The machine contains a vat of nylon powder thats heated almost to melting point. Laid down in thin layers, the powdered plastic is fused (sintered) by a laser that follows the CAD drawings. In this way complex parts can be created, layer-by-layer, on a small scale in a workshop. SLS prototypes are especially useful for testing, as the fused plastic pieces have very similar properties to injection-moulded parts from mass manufacturing. The engineers can even fit motors and electronics to build a fully operational prototype.

Ford wasnt the first to embrace assembly lines, but it was the first to perfect it. By 1914 a Model T chassis (the car minus the interior, body and paint) could be built in just 93 minutes, and 15 million were made in total. Discover more inspirational designers at www.jamesdysonfoundation.com

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The rubber trampoline sea l is inside the bin of the DC22
2.5.3Choosing the right materials In design engineering, the tolerance of a material refers to the margin of error in the specification of a particular dimension. For example, if you design a part to be 5mm thick, the tolerance is the amount thicker or thinner it can be once manufactured, without detrimentally affecting performance. For instance, a seal might have been designed to be 1mm thick. When mass produced, some will be precisely that. But others might be 0.9mm thick or 1.1mm thick. A seal is any device that joins two systems or elements in such a way as to prevent a leak. There are many places on the DC22 where two different parts meet and these have to be completely airtight. The join between the hose and the bin is just one example. The seals keep the DC22 airtight, so the air travels through the machine without escaping and degrading performance. In some instances its possible to live with wide tolerances. But when a seal has to make a join between two components airtight, tolerances are narrow. During their experiments with foam seals, the engineers discovered that foams tolerances werent narrow enough the deviation either side of the specification was too great. The acceptable margin of error like this in a design is called the tolerance range. The engineers therefore chose to make the seal from rubber which can be manufactured with a tighter tolerance range than foam.
If you have the education box, take the bin off the DC22 and open it by pressing the red button on the handle. Youll see two seals on the inside of the base of the bin. The outer seal makes the joint between the base and the sides of the bin airtight. The thicker inner seal called a trampoline seal prevents air entering the core separator and inner cyclones without passing through the shroud first. The trampoline seal is made from rubber. When the engineers originally designed the DC22, a foam seal was considered, but they experienced problems with tolerance.

User course Even after a design has passed all its tests and gone into mass production, the testing continues. At the Dyson factory in Malaysia theres a vacuum cleaner obstacle course where, 24 hours a day and 7 days a week, machines are dropped down stairs, tugged around corners and banged into skirting boards all to make sure they can withstand the bumps and bashes of real life.
A Dyson Tester puts the machine through its paces.
In some ways you never really want to let go of a machine youve worked on. There are always things youd like to tweak to make improvements but it reaches a point where they become so insignificant that theres no real benefit. Its just like the artist who finds it very difficult to know when to stop adding more brush strokes to a painting. Jon, Principal Engineer
James Dyson Foundation teachers pack Disassembly ACTIVITY

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3 DISASSEMBLY ACTIVITY
You can learn a lot about how something Is designed by taking it apart. And thats exactly what youre going to do with your DC22. Whilst disassembling the DC22 and the turbine head, think about why the engineers designed them in this way.

you will need:

questions
a TORX T15 screwdriver (included in the box)
a spoon handle or coin to lever off the sole plate
A) hat are you going to learn W about design by taking it apart? B) hich features enhance the W performance of the product? C) hich features make it easy W to use? D) hy have the engineers W chosen to fix parts together in a particular way? E) hat materials have the W engineers chosen to use and why? F) hich technologies are used W in other products? G) How do you think the machine is manufactured?
A coin to secure and undo quarter-turn fasteners
2 cups to keep screws (one for long screws, one for short screws)

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3.1 disassembling the dc22 turbine head
Note on safety: When working on this machine Dyson recommends protective clothing and eyewear. Please take care when disassembling and reassembling the machine as there may be sharp edges or corners that are not normally accessible. It is the schools/organisations responsibility to ensure that pupils/clients are supervised at all times when disassembling and reassembling the machine and that the schools/organisations safety regulations are carefully followed. Please follow the instructions with disassembling the DC22. To ensure electrical safety, do not disassemble the machine further than the instructions suggest.

ANSWERS

A) What its made of. Some of the problems that the design engineers solved. Is it easy to assemble? Is it easy to clean? Can it get blocked during use? How easy is it to clear blockages? B) Cyclone technology. C) Examples include: Tools and hoses can be removed from the machine to make it easier to clean if it gets blocked with debris. ilters need to be washed or F replaced. The machine is designed so that the filters are easily accessible.
Use of colour to draw the eye (you will see examples of this later when disassembling the product). D) The engineers usually use quarter-turn fasteners and clip fittings for parts that can be removed by the customer. They use TORX screws to secure areas of the machine that should only be accessed by trained Dyson service engineers. E) Brush bar PP (Polypropylene) Turbine cover PBT (Polybutylene Teraphthalate) Main body of turbine tool PC (Polycarbonate) Flexible Hose PU (Polyurethane) Wheels primarily PP Sole plate ABS (Acrylonitrile butadiene styrene) Metal screws
F) Electric motor Electronics G) The plastic parts are injection moulded and then assembled with the other components on a production line.

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ELEMENTS OF A DS22 TURBINE HEAD
Use this diagram to identify parts of the DC22 Turbine Head when disassembling or reassembling.
Turbine Tool Hose Assembly

Turbine Tool Assembly

Screw Duct cover
Axial Turbine Assembly End Cap Assembly

Screw Belt Cover Seal

Belt Cover Assembly

Flicker Strip

Brushbar Assembly

Soleplate Wheel Axle

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Step one: Start with the turbine head floor tool
Start by looking at the turbine head and how it fits onto the vacuum cleaner. Detach the turbine head from the chassis of the vacuum cleaner or wand by lifting upwards.
A) How have the engineers solved the problem of where to store the machines tools? B) What are the main components of the turbine head? What are the components made of? C) How does it fit on the machine? D) hy is the turbine head W detachable from the hose and wand? E) Compare it with the Mini Flat Out head and other tools what are they all for? F) Look at the hose. What material is it made of and why is it appropriate for the hose?
Step two: Remove the duct cover

TORX screw (short)

Once youve removed the duct cover: A) The duct cover has rubber around the edges. What is this for?
Theres a silver knob on the side of the turbine head. Near to it, on top of the turbine head is a TORX screw (short), unscrew it. Lift the panel with rubber edging off the top of the turbine head. The part that comes off is the duct cover. Youll see a metal rod connected to the silver knob this is the choke that opens and closes the airway to the turbine. The turbine uses air sucked in through the side of the turbine head to spin the brush bar. If the duct is open, the brush bar spins. If its closed, it doesnt.

A) hy is the brush bar housing W transparent? Do you know what type of plastic it is made from? B) Look at the rollers on the bottom of the soleplate. Why do you think they are covered in felt?

TORX screw (long)

Step five: Remove the turbine
Look at the side of the floor tool, at the circular opening for the turbine. To one side is a TORX screw (long). Undo this and then find the second (short) screw keeping the turbine in place its inside the turbine head, near the front. When both screws have been taken out, twist the turbine anticlockwise and pull it out. You now have the turbine drive in your hands, with the blades of the turbine clearly visible.
Examining the turbine: A) hy do you think the turbine is W located here? B) Look at the side of the turbine to see the mesh cover. What do you think its for? What do you think its made from? C) Turn the small cog that drives the brush bar. You can see that it spins slowly whilst the turbine spins much faster. Why do you think this is?

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A) The brush bar cover is transparent so that the user can see if its turning or if something has become tangled in the bristles. It is made of PC (polycarbonate). B) The rollers are covered in felt so that they dont scratch wooden floors.
A) If dirt is sucked into the turbine it can clog the blades so that it doesnt turn properly.The turbine is located on top of the tool so that it sits above the floor and only sucks in clean air to drive the brush bar.All the dirty air passes through the underside of the floor tool and up the hose, never coming into contact with the turbine. B) The mesh is another way that the design engineers ensure that dirt doesnt enter the turbine. Its made of polyamide 6 commonly referred to as PA6 or nylon.
C) Normally the turbine drives the cog. The high speed of the turbine gets maximum power from the airflow, but this would be too fast for the brush bar. The slow moving cog converts the power from the airflow into torque (turning force) powering the brush bar through the carpet. Its like the gearing on a bike which enables you to turn the pedals at a lower RPM (revolutions per minute) than the wheels.

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Reassembling the dc22 turbine head
Now youve stripped the turbine head, simply reverse what youve just done to reassemble it.

A) The wheel is clipped into place. What methods of fixing parts together have you found when dismantling DC22? How many screws have you undone? B) hen the engineers have chosen W to use quarter-turn fasteners, why do you think that is?

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A) The louvres are angled up and backwards so air exiting DC22 is directed away from the floor, where it could disturb dust on carpet that hasnt been vacuumed yet. The louvres also reflect some of the sound from the motor, making the machine quieter.
A) Clip / snap fitting Quarter turn fasteners Torx screws B) Quarter-turn fasteners are used to fasten areas where the person using machine will need access, for example to wash filters or clean the brush bar in the turbine head. Using this kind of fastener means that the user doesnt need special tools to get into the machine.

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REASSEMBLING

THE DC22

To put the chassis back together again, reverse the process youve just followed. Think about how everything fits together and how the designers have made it quick and easy to assemble from the components.
Take the wheel and place the rim on the chassis. Then put the hubcap over the centre, making sure you line up the four latches and two pegs on the underside with the notches and holes on the chassis. To re-fit the hubcap, push firmly you may need to lean on it to push it into place.
Turn the machine onto its other side and push the exhaust vent back in from the side. Insert the thinner end of the vent into the gap before the larger end. Secure it with the screw you removed earlier.
Replace the panel with the caster wheel on and screw all 7 screws in.

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questions (answers on pag

Step four:

Put the post-motor HEPA filter back into its place because of the tab, itll only fit one way round. Its an example of poka yoke design.
A) ote that the HEPA filter will only N fit one way round. Why do you think the engineer has designed it in this way? B) Look out for other examples of poka yoke design as you reassemble the machine.

Step five:

Now place the post-filter housing cover back over the HEPA filter. Make sure the four tabs on the cover go into the four slots on the main chassis, then close with the two quarter-turn fasteners.

Step six:

Put the machine on its side, and open the wheel door using the quarter-turn fastener labelled A. Refit the pre-motor filter by sliding it over the motor. This is an example of poka yoke design.

Step seven:

Close the wheel door and secure with the quarter-turn fastener next to the grill.

Dyson Dyson Foundation teachers pack James education pack Disassembly ACTIVITY

page 48

A) Because the HEPA filter is made up of different layers, it is important that the air passes through the filter in the right direction. Therefore the engineer has designed the filter and the machine so that it will only fit one way round. This is a design technique known as poka yoke. This is a Japanese phrase which means fail-safing or fool-proofing.
B) Pre-motor filter Tab on the base of the bin to ensure that the bin and cyclone assembly drops into the right place.

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Step eight:
Turn the machine upright and reattach the floor tool storage bracket with the screw. Then reattach the upper hose guide to the chassis, screwing it in place.

Step nine:

Then find the hose. Insert the end back into the chassis and slot the hose retainer back into place. Next, reassemble the bin. Ensuring that the bin base is securely closed, lower the cyclone assembly into it making sure that the red bin empty mechanisms align on the two. Push until you hear a click.

Step ten:

Take the bin and place the clear tooth on its base into the notch on the chassis. Push the bin back into the chassis until the bin release button clicks closed.
James Dyson Foundation teachers pack Notes

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NOW ITS

YOUR TURN!

We hope this education pack and box has given your students an insight into how creative, challenging, and ultimately satisfying design engineering is. Were constantly working on materials that will help you to convey this in your classroom. Use our resources and give us your feedback. Please get in touch at www.jamesdysonfoundation.com jamesdysonfoundation@dyson.com