Elenco | EDU62019 | Owner Manual | Elenco EDU62019 Tumbling Robot Owner Manual

Elenco EDU62019 Tumbling Robot Owner Manual
A single motor produces
amazing actions!
Tumbling
Robot
A Science Guide with Supplemental Experiment Kit
AGES
8+
CO-BOT 3 MODES
01
Amazing and Amusing Walk!
Falling and stumbling, Co-Bot will never
give up!
Let's go Forward!
Co-Bot has amazing power and energy.
Let's Go Mode
A single motor produces
amazing actions!
02
Let's cheer on Co-Bot for neat somersaults!
Never tiring somersault Mode
Tumbling Robot
03
Swinging arms
widely, dance
around with great
balance!
Wobbly-funky!?
Dance Mode
THE SECRET OF
THE 3 SENSORS
The 3 sensors at the belly, the back, and the
leg of Co-Bot make it possible. Sensors are
pushed by falling and getting up and change
the internal gears.
© GAKKEN
First published in Japan by Gakken Co.,Ltd., Tokyo
MADE IN CHINA
P38-GK013-81001000
Why and how?
Secrets of Co-bot
Co-Bot can walk! No
matter how many
falls and stumbles,
Co-Bot gets up
without any help!
How does Co-Bot
maneuver these
complex motions?
The secret is in its
original mechanism.
Gears and
Cranks
Please purchase 2 AA
batteries separately.
You can learn
the basics of the machine!
2
04
Let's play with "Co-bot"!
05
Let's assemble "Co-bot"
07
Let's operate "Co-bot"
08
Co-bot 3 modes
10
Why and how? Secrets of Co-bot
12
Co-bot's getting up action
14
Mechanism of machines master class- Gears, Belts, & Chains
16
Mechanism of machines master class- Crank
18
Mechanism in state of the art robots
20
Troubleshooting Q&A
TUMBLING ROBOT
TUMBLING ROBOT
JR. SCIENTIST
CONTENTS
3
FALL, GET UP AND FALL AGAIN
TUMBLING
ROBOT
LE T ' S ASS E M B LE "CO- B OT"
Right Leg Assembly
Parts list
Head
Arms
01
Decals
Turn the gear in the hip so
the peg is positioned down.
LET'S PLAY
WITH "CO-BOT"!
gear
peg
Hip assembly
A MA Z I NG A N D
A MU S I NG WA LK !
Complete
Leg
Sensor
Amazing Actions with a single motor!
Brilliant work of gears and cranks!"
Back
Chest
3 pins
02
Insert right leg from side slit.
05
Line up the lower hole of the hip
assembly and the elongated leg
hole. Insert a pin into the two
holes so two parts are joined.
Legs (Left and Right)
Left
Right
Sole of feet
Please purchase 2 AA
batteries separately.
Alkaline batteries are
recommended due to
their weights.
Handle with caution! Two legs
are attached by a lead wire.
03
Slightly lift the top gear and
hook the leg hole on the peg.
04
Move the leg carefully over the
hip hook and bring the leg down.
hip hook
Push the pin
firmly until
it stops.
CAUTION!
4
• Follow the instruction manual for assembly and operation of this product for the safety.
• Be cautious with small parts. They are choke hazards.
• Handle sharp corners and pointy parts with caution.
• Do not leave the product on the floor. Injury can occur by stepping on it.
• Do not coil the wires on body parts. This may cause injury.
• Do not touch the gears during the operation. This may cause injury.
• Do not experiment in the road.
• Do not experiment near river or pond.
• Do not experiment outdoor in the evening. It is dangerous due to poor visibility.
• Hard tugging and over stretching of the electrical wires may damage the wire.
• Pulling the arms and legs of the robot in the wrong direction may damage the product.
• Forcing to stop the movement of the robot by hand during the operation may damage the
product and/or cause injury.
• Do not disassemble the robot by unscrewing. It may damage the product.
• Do not use the damaged and deformed parts.
• Store away from toddlers' reach after completing the experiment.
* Recycle and dispose according local regulation.
* The photo images of the product may vary slightly from
the actual product in colors and/or small details.
left Leg Assembly (This is "Let 'Go Mode" in page 9)
01
Line up the holes as
shown in the picture.
02
line up the left leg hole and
bottom hole of the gear as
shown in the picture.
03
Push a pin
firmly in until
it stops.
04
Line up the lower hole of
the hip assembly and the
elongated leg hole and
insert a pin.
TUMBLING ROBOT
JR. SCIENTIST
Please read before assembling this product (adults/supervisors must read)
5
Chest Asse mbly
01
Hold hip-leg assembly
sideway and attach
the leg sensor.
First, pull Next, insert
through
one end into
the hole.
the hip hook.
02
Align pegs and
grooves and snap on
the chest.
Arms Assembly
Electrical Set Up
Line up the gears as shown in the picture. Snap on the
arm axis rod into the two side grooves (catch) of the
chest. Push the axis rod firmly in until it clicks.
01
Keep foot button
pushed in.
Be careful with
positive and negative
orientations of the
batteries.
02
03
Attach the soles of
feet. Be careful with
right and left soles!
04
Twist the yollow lead wire
around the hip hook (one turn).
*Wheels are
positioned
inside front.
Foot button pushed
in position switches
the robot off.
05
Back Installation
Head Installation
Line the back so the back
sensor should penetrate the
back through the hole and
install the back.
Align tongues and holes.
Push the head straight down.
Plug the
connectors.
If the foot
detaches…
left
foot
Insert the foot back into
the bracket by slightly
opening the bracket.
Be careful not to insert
bracket
the foot backward.
Orientation of Toes and
heels is crucial for
walking.
right
foot
How to use Decals
01
Pulling the foot button up
will turn the switch on.
02
Push the
square axle
of the wheel
into the
wider hole.
Pry the sole off using
a coin at the grooves
on toes and heel.
LE T ' S O PE RAT E
" CO - B OT "
* toes have big grooves
Be creative and find
your own expressions!
You can use a blank
sticker and draw your
own design, too!
If the wheels
detach…
To exchange
batteries…
Co-Bot starts moving vigorously.
There are 3 modes of Co-Bot. The
features of 3 modes are illustrated in
the next page.
Wobbly-funky!?
Dance Mode
Orient the gear
as shown in the
picture, pin the
left leg on the
bottom hole.
Not recommended to operate
the robot on tables and furniture
that can be scratched and
damaged. Operating the robot
on the carpeted floor will make
the robot fall down easier.
IF THE FOOT BUTTON
(SWITCH) DETACH …
Never tiring
Somersault
Mode
JR. SCIENTIST
6
Replaced with a
head from different
toy figure!
Example of using
moving eye stickers.
(stickers not included.)
Remove leg
sensor from
the chest.
TUMBLING ROBOT
Insert the button back into the
hole aligning the pointy side
with the toes.
7
Amazing and Amusing Walk!
Falling and stumbling, Co-Bot will never give up!
Let's go Forward!
Co-Bot has amazing power and energy.
Let's Go Mode
Orient the gear as shown
in the picture. Pin the left
leg to the bottom hole.
CO-BOT
3
MODES
You will laugh and enjoy amazing and
unexpected moves of Co-Bot!
Wildly
Funny
Try This!
Use a rubber band and restrict the belly sensor. Co-Bot
will repeat bend down and stretch.
Fun to watch two Co-Bot interact!
8
Remove leg sensor
from chest.
Let's cheer on Co-Bot for neat somersaults!
Never tiring somersault Mode
Swinging arms widely, dance
around with great balance!
Wobbly-funky!?
Dance Mode
Orient the gear
as shown in the
picture, pin the
left leg on the
bottom hole.
TUMBLING ROBOT
JR. SCIENTIST
Tie a rubber band
around the belly
sensor and the side
* If a rubber band is too tight,
hook of the chest.
Co-Bot will become in the
Somersault Mode.
9
FALL, GET UP AND FALL AGAIN
WHY AND HOW?
SECRETS OF
CO-BOT
Co-Bot can walk! No matter how many falls and
stumbles, Co-Bot gets up without any help! How does
Co-Bot maneuver these complex motions? The secret is
in its original mechanism.
CHANGING INTERNAL GEARS
THE SECRET OF THE 3
SENSORS
All the great functions of Co-Bot, such as walking and
getting up, becomes useful only when those functions are
activated at the right moment. The 3 sensors at the belly,
the back, and the leg of Co-Bot make it possible. Sensors
are pushed by falling and getting up and change the
internal gears.
This part and the screw like
gear (the worm) work together
and shift one motion to another.
The belly sensor:
Pushed in when
Co-Bot falls
down on its
belly and hit the
ground.
The back sensor: Pushed in
when Co-Bot falls on its back.
CREATING COMPLEX ACTIONS
THE SECRET OF THE GEARS
• 12 GEARS IN ONE CO-BOT!!
The leg sensor: Does
not touch the ground
normally. Activated
during Co-Bot's
getting up rotation,
as the sensor extends
beyond Co-Bot's legs
by falling down.
Co-Bot uses total of 12 gears.
The most important one is the
red gear at the right hip.
"Kagaku no Tamago" original
design, this gear creates
dynamic stand up action.
• HIP GEARS ACTIVATE
DIFFERENT MOTIONS
Gear B
Gear A
JR. SCIENTIST
10
Gear A (see the right page for detail)
works as a crank that command the leg
motion. Gear C makes Co-Bot bend down
and Gear B stretches the body. A small
Gear D will transfer rotational power of
the motor to the other gears. Depending
on which gear is powered, Co-Bot moves
differently.
* Colors of the photographed parts may be different
from the actual product.
The end of Co-Bot's leg is pinned to the hip gear. Since it is not glued on, the leg can move freely as
the gear rotates. Co-Bot's leg will lift off the ground and steps forward just like humans and other
animals. This becomes possible because the elongated leg slit limits the motion of the legs within a
certain range. This mechanism, transferring a rotational motion into a linear motion, is called a crank.
TUMBLING ROBOT
Gear C
Gear D
TRANSFERRING ROTATIONAL MOTION
OF MOTOR TO LINEAR MOTION OF WALK
THE SECRET OF THE CRANK
11
COMPLETE GUIDE!!
GETTING UP ACTION
COMPLETE!!
CO-BOT'S GETTING
UP ACTION
How does Co-Bot get up? Let's look at the motion step by step!
*Gear B is omitted
Needle
FALLS BACKWARD!
Worm
Spring
Gear A
Gear D
As the body gets up, Gear
D engages Gear B (middle
gear) and A (inner gear).
When the body stretches
all the way, gear D leaves
gear B and moves only
gear A. Co-Bot will
continue walking.
Gear C
Back Sensor
When the back sensor gets
pressed, the needle is lifted
and disengaged from the
worm. The spring on the axis
extends and bring Gear D to
Gear C. Co-Bot is switched to
getting up mode.
When Co-Bot sits up,
the body pushes the
leg sensor. The leg
sensor extends
beyond the legs.
THE LEG SENSOR
TOUCHES THE GROUND!
CO-BOT SITS UP!
When Gear D engages Gear C,
The upper body of Co-Bot lifts
up. When upper body bend
forward all the way, Gear D
starts idling. It remains idling
until the body starts stretching.
PUSH UP THE BODY
WITH ARMS!
The arm axis rotates. A fin on
the axis meets the fin on the
shoulder and pushes the arms
around.
Gear D
The Leg sensor pushes the
needle on the worm.
Because the threads of the
worm run diagonal like a
screw, it slides the axis
toward left side of the hip.
Like a screw, rotation Gear A
causes the axis to slide in
the direction of the arrow.
Gear C
LET'S CHECK THE FUNCTION
OF A SENSOR!
12
When Co-Bot falls forward, the belly sensor is pushed by the
ground and the body bends in half. The leg sensor
immediately touches the ground and bring the body upright.
It is much quicker motion than getting up by the arms.
• First, the belly sensor gets pushed in.
• The moment the
body folds in half, the
leg sensor touches
the ground.
• Instantly, the
body jumps
back up!!
Co-Bot doesn’t have abilities to see things or
make decisions. Co-Bot relies on sensors to
maneuver and switch between the different
motions. Let's check the function of a sensor by
moving the sensor by hand.
• The body bends in half even
though Co-Bot didn't fall down!!
• Pick up the walking Co-Bot
and push the back sensor…
!
Be careful not to drop Co-Bot
TUMBLING ROBOT
JR. SCIENTIST
WHEN FALLS DOWN ON BELLY, CO-BOT JUMPS
UP SWIFTLY!!
13
MECHANISM OF MACHINES MASTER CLASS
GEARS, BELTS, & CHAINS
-TRANSFER ROTATION, CHANGE SPEED AND DIRECTION
OF ROTATIONMini quiz
Gears, belts, and chains transfer rotational
motion. They are used in many mechanisms
of everyday devices such as bicycles and cars.
Can the robot receive the apple?
Let's trace the direction of the belt!
Answer is at the lower right corner.
01
Technical consultation: Masahiro Mori, Professor Emeritus, Tokyo University
illustration: Kasyu
Gears, belts, and
chains - Importance
•Transfer rotational motion
When a gear rotates, it rotates adjacent gear. The direction
of the rotation of the second gear becomes opposite to the
first gear. Contrary, the two gears attached by belts or
chains will rotate in the same direction.
Pinion
Gears attached by
teeth rotate
opposite directions
Gears joined by
belts rotate in the
same directions
02
When the driving wheel
has a fixed diameter, the
larger the driven wheels
becomes, the slower it
rotates and requires less
force.
Driven wheel
03
Gears, belts, and
chains - Importance
•Change rotational directions
Adjacent gears usually rotate opposite directions to each
other.
However, choosing right types of gears, the
rotational directions can be changed by 90 degree. By
arranging special gears, one motor's rotation can produce
motion in a variety of directions.
Answer of the mini quiz:
Yes, the robot will receive the apple
JR. SCIENTIST
Rack
•Bevel Gear
Bevel gears can change the
direction of rotation by 90
degree.
Driving wheel
The smaller the gear becomes, the faster the
wheels rotates. The pedals require greater force.
Worm
TUMBLING ROBOT
14
Gear Change of Bicycle
•Worm Gear
Worm gear is an assembly consists of a
worm and a worm wheel. Worm's screw
like thread rotates the worm wheel. Worm
gear can shift the direction of the rotation
by 90 degree. It is useful to reduce the
rotational speed by large amount.
Worm wheel
Gears, belts, and
chains - Importance
•Change the rotational speed
When two gears have same diameter, the rotational speed
of the two gears is the same. On the contrary, when two
gears have different diameters, the two gears have different
rotational speeds. The larger the diameter becomes, the
slower it rotates. The smaller the diameter becomes, the
faster it rotates. Geared bicycles use this mechanism of
gears. The same rules apply to the number of teeth. The
more teeth a gear has, the slower it rotates.
•Rack and Pinion
A rack is a linear gear bar. A
circular gear is called pinion.
A pinion rotates on a rack.
This mechanism is used to
transfer a rotational motion
(pinion) to a linear sliding
motion (rack) or vise versa.
15
MECHANISM OF MACHINES MASTER CLASS
CRANK
-TRANSFER ROTATIONAL MOTION TO LINEAR MOTIONA crank is a system that change
a rotational motion into a linear
sliding motion. It is widely used
in many equipments just like
gears and belts.
rod
• Crank of a Car Engine
A gasoline explosion in a
cylinder pushes down the
piston. This motion of the
piston is transferred by
connecting rod to the crank
and to the flywheel
(attached at the end of the
crankshaft, but omitted from
the illustration). The
flywheel keeps the
momentum of the rotation.
The crank keeps rotating
and pushes the piston back
up. The piston moves up
and down and the crank
shifts that motion into
rotational motion.
Cylinder
Crank
•Basic structure of a crank
A crank has a circular disk called crank and a straight
rod attached at an off center location of the disk. As
crank rotates, the end of the rod slides linearly.
Piston
Connecting rod
Front Windshield
Crank
Crankshaft
Wiper blade
•Windshield Wiper
Windshield wiper of a car
uses a crank to change
rotational power of a motor
to sliding motion so that
the wiper blades move side
to side on a windshield.
Axis of a motor
Various Linkage
Four Bar Linkage with Crank
There are various linkage technics to power one part
of the system and move other parts in different
patterns. There are many more technics other than
the examples of windshield wipers and car engines.
JR. SCIENTIST
Worm
Crank
16
Connecting Rod
Four Bar Linkage
Combining a crank
and a slider, a
rotational motion
can be changed
into linear sliding
motion or vice
versa.
Joining four bars and
form a loop, one side
to side motion can be
changed to another
side to side motion.
TUMBLING ROBOT
Crank Slider Mechanism
Combining a
crank and a four
bar linkage, a
rotational
motion can be
changed into a
side to side
fanning motion
or vice versa.
17
Mechanism in State-ofthe-Art Robots
Co-Bot uses gears to transfer the rotational power of a motor to arms and legs.
Let's explore some of the mechanism used in the other robots.
KHR-2 HV (A-624 Genex)
Height: appr.34cm / Weight: appr.1.3kg
Kondo Technology Corporation
Robots powered by Servomotor
What is a Servomotor?
A servomotor uses computerized feed
back system so that it provides more
precise control. A servomotor makes it
possible for robots to stop the motion
at a desired position, to produces
When the weight of the
quick and compact movements, and
cup pushes downward, the
to operate with less noise.
servomotor senses the
force and push it up with
equal amount of counter
force. The robot can keep
the posture stable.
Robotic Suit: HAL-5
Height: 160cm / Weight: 23kg
CYBERDYNE Corporation
A collaboration of a human
and machine, HAL-5 is a type
of cyborg. The suit reads the
neural signal through muscle
system of the wearer. It was
developed to assist the daily
activities of people with
health problems or injuries.
The weight of the suit is
supported by HAL-5 itself so
that the wearer do not feel the
weight of the suit.
WL-16R III
JR. SCIENTIST
18
It carries people and
walks with two legs. It
can be operated like a
car as well. Can be
used outdoor and
supports up to 94kg.
ASIMO
Height: 130cm / Weight: 54kg
HONDA
One of the well known state-of-the-art
robots. ASIMO has been in TV
commercials and traveled abroad.
ASIMO can recognize human faces,
run, and deliver drinks on a tray.
HRP-3 Promet Mk-II
Height: 160cm / Weight: 68kg
Kawada Industry
This is a robot that can work with humans. He
can walk on slippery surfaces and work in light
rain with no problem. The stylish design is also
attractive. He holds a power tool in his hand.
What is an Air Pressured
Artificial Muscle?
An Air Pressured Artificial
Muscle uses air pressure in
its mechanism. It is made of
rubber tubes encapsulated
inside woven sleeves made
from inflexible material.
When the rubber tube
inflates, the woven sleeve
becomes fatter and shorter.
Its softer material makes it
possible for a wearer to
move with more freedom
compared to a metallic suit.
Muscle Suit
Relaxed in normal state...
When it's inflated, crates
compression force in the
direction of its length.
Tokyo Science
University Dept. of
Mechanical Engineering
Kobayashi Lab
Muscle suit was
developed to assist
people as well. It is light
weight and worn only on
the upper body.
Hydraulic System "T-53 Enryu"
What is a Hydraulic
System?
A hydraulic system utilizes the
power of fluid (oil) pressure. When
two different size pistons are
connected, the larger diameter
piston will exert a greater force
because of the larger surface area.
The popularity of hydraulic
machinery is due to the substantial
amount of power that can be
transferred through small tubes.
T-53 Enryu
Height: 2.8m
Weight: 2950kg
Temzak Corporation
Because of its great
power, it works best
for reconnaissance
missions at disaster
sites. It can lift 100kg
with one arm. It also
moves around well
with its caterpillar leg
in rugged terrain.
T-53 demonstrating moving a drum can.
TUMBLING ROBOT
Height: 128cm
weight: 76kg
Waseda University
Department of
Mechanical Engineering
Atsuo Takanishi Lab
Temzak Corporation
This is not a working robot. It was
developed for the purpose of study, play,
and competition entry. It is affordable for
normal people and a very friendly robot.
Air Pressured Artificial Muscle,
"Muscle Suit"
19
Troubleshooting
NOTES
If there is any trouble during the operation, turn the power switch off first.
Troubleshooting with power on may cause injury or damage the product.
It does not stand up after falling…
Find a similar symptom from the following.
Arms do not move.
Stops moving during getting up sequence.
The shoulder rod may be dislocated and gears
may not be engaged properly. Remove the back,
fix the problem and re-install the back
The lead wire may be caught on the belly sensor.
Take the lead wire off and free the belly sensor.
Re-wire the lead wire around only the hip hook
without excess wire hanging loose.
Arms stop rotating due to
shoulder axis dislocation
Lead wire is caught on
belly sensor and sensor
doesn't move properly.
Use thumb and press the
rod firmly in place
Co-Bot's action sequence does not change from
one motion to another after it falls down.
20
Doesn't stand up but somersaults.
Make sure that the leg sensor is placed properly. If it
is dislocated, re-install properly.
I would like to change modes, but I
cannot take the leg pin off…?
Co-Bot falls down too easily or does
not fall down at all..?
Use a coin
Change batteries
Insert a coin between
the leg junction and hip
part, twist coin and
remove the leg. Be sure
not to loose the pin.
Co-Bot is sensitive to the weight of batteries.
Its likelihood of falling can be varied by that.
Weight of batteries may vary slightly by the
brands. As the batteries get older and their
power gets weaker, the Co-Bot's motion
becomes less vigorous and makes it harder to
fall down.
TUMBLING ROBOT
JR. SCIENTIST
Sensors may not be pressed all the way. Check the
sensors function by pressing the sensors by hand.
Coil the excess wire on the
right side peg and keep it
away from other moving
parts.
21
22
NOTES
TUMBLING ROBOT
JR. SCIENTIST
NOTES
23
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