One serious road accident in the country occurs every minute and 16 die on
Indian roads every hour. 1214 road crashes occur every day in India.Two wheelers
account for 25% of total road crash deaths. Given the statistics of road accidents in
India (source NDTV) and especially two wheelers, our proposed sensor controlled
side stand lifter mechanism, found its enormous application in two wheelers to
ensure safe lifting of side stand as the two wheeler stars to move. This can prevent
accident caused by side stand remaining in non-retracted position when rider forget
it to liftit up manually before he starts todrive. It provides a fool proof and cheap
system so that rider remains tension free of lifting up of side stand before driving.
This invention totally works for minimum intervention of human. Also in such
situations in which side stand distracts in downwardposition while riding without
knowledge of the rider because of failure of spring mechanism,it shows its
usefulnessin these cases too by retracting it backwards to safe position thus again
avoiding unusual happening. So it is a cheap, fully automatic and fool proof
mechanism for two wheelers to ensure their safety from non-retracted side stand
related accidents while driving.
DESCRIPTION
The presented system of sensor controlled side-stand lifter mechanism for bike is a
unique idea that will definitely reduce the accident caused due to the ground position of side
stand when the bike is running. It will remove the human intervention in lifting up the stand
while the bike starts to move in forward direction. Hence, the errors caused by humans, due to
negligence in lifting the side stand before allowing the bike to move, are eliminated. Therefore,
the mechanism is fully automatic as it consists of sensors, controllers & servomotor powered by
motorcycles battery. Speed sensor is attached in front wheel of motorcycle that sense the
motion of bike when it tends to move in forward direction. This sensor is connected to the
microprocessor that commands servomotor to lift up stand. It has housing for a magnet passing
through the axle mounted near the centre of wheel, which revolves, with the movement of
wheel. Coil placed near to the magnet within the speed sensor gets induced and electromotive
force is generated which is interpreted by microprocessor to give command to servo motor for
actuate movement.
The presented mechanism uses mostly those devices that are already present in bike.
While speed sensor, servomotor and microprocessor are needed to be installed externally in
order to establish automatic lifting mechanism. Total weight of these components used are only
about lOOgm and so will not disturb design prospective of any bike and can be used in almost
every bike out there on the street.
ENDORSEMENTS OF PUBLISHED PATENTS
1) A patent titled, 'SEMI AUTOMATIC SIDE STAND RELEASE SYSTEM5 bearing application No.
1572/CHE/2007 & Journal No. 39/2007 was published by R. SIVAKUMAR on 28/09/2007which was
partially automatic in operation.
2) A patent titled, 'AUTOMATIC LIFTING SIDE STAND OF TWO WHEELER' bearing application
No. 2224/DEL/2010 & Journal No. 39/2013 was published by RAHGAV KR. CHOUDHARY, AMIT
KR. MANDAL, KRISHNA KUMAR, SHASHANK RAI & SHASHI RANJAN on 27/09/2013. An
arrangement was made to automatic closing the stand when the bike was brought to its vertical position
(Straightened for riding). This reduces problem of side stand remain in open condition by mistake or
forgetfulness of rider. The automatic stand comprises of a spring to lift the stand "L"lock which was
provided to withstand against small disturbance. And a spring, which removes the side stand from the
locks position and brings the side stand in its closed position in case the vehicle was made straight in
vertical position. This system was not sensor based.
3) A patent titled, 'AUTOMATIC SIDE STAND RELIEVER' bearing application No.
WWCnm0Mj& JfiiBna^o. ^ 0 0 7 was smbhsJaed by D.SENTHIL KUMAR, D.NAGENDRAN,
& S.RAVI on 02/11/2007. An Automatic side stand reliever comprising base of electronics and digital
format / using electro magnetic principle in two wheelers / modification of the mechanical components
of our existing invention / to relieve the side stand by using accelerator in without gear vehicles /
existing invention working on clutch action it may be modified by kicker action and accelerator. To
relieve the side stand by using the gear changing action like neutral to first gear. To relieve the side
stand by fixing of the electric motor nearest the side stand and it activated electrically by means of
battery power. Using the separate switch for activate the side stand relieving mechanism. The side
stand reliever was activated with ignition 'ON' and "OFF" principle. The side stand was operated by
using the sensor. This is an automatic system but not based on speed sensor.
4) A patent titled, 'AUTOMATIC RETRACTING SIDE STAND ASSEMBLY FOR
MOTORCYCLE5 bearing application No. 2583/CHE/2009 Journal No. 18/2011 was published by B.
VINOTHon 06/05/2011. A Stand which can retract automatically includes an outer tensile spring
normally pull back the side stand to its initial position. A key inside the stand to lock it with base in
working position, an inner compressible spring to release the lock, a rubber block to support the key
and a spring holder to support the inner spring. The outer tensile spring was fixed at an angle theta so
that it always pulls back the stand to its initial position. To lock it in working position a key was used
which was supported by inner spring. When the inner spring releases the key the stand would
automatically retracted back to its initial position. This is a mechanical system without automation.
5) A patent titled, 'SEMIAUTOMATIC SIDE STAND LIFTER' bearing application No.
3186/CHE/2014 & Journal No. 06/2016 was published by RAVI. S, RAHEEM. S, RAJESH. S, &
VIGNESH. M on 05/02/2016. Using ratchet and pawl mechanism side stand was going to be lifted
during gear shifting. This whole setup was to be implemented in both front and back gear bikes.
Initially ratchet wheel was welded with the stand and a spring was kept at a necessary tension so that it
can be retrieved. Pawl was always engaged with the ratchet wheel by using damping spring at a certain
tension. Pawl was mounted in between the side stand and the gear lever. When the gear was shifted the
oscillatory motion of lever is converted into rotary motion of the side stand so that the stand is lifted.
This is also a purely mechanical design and no sensor based automation was done.
6) A patent titled, 'A DEVICE FOR THE AUTOMATIC RETRACTION OF THE SIDE STAND OF
A TWO WHEELER MOTOR VEHICLE5 bearing application No. 715/CHE/2009 & Journal No.
02/2012 was published by VENKATA MANGARAJU K., BAPURAM RAJASIMHA, &
RENGARAJANBABUonl3/01/2012. A device for the automatic retraction of the side stand of a
two wheeler motor vehicle comprising a spring loaded side stand, said spring tending to keep the said
stand in its OFF condition when moved to its OFF position. A trigger member for being actuated by a
cam provided on the said stand. The said cam actuating the trigger member to urge itself against the
gear shift lever of the said vehicle and lock itself to the said member whenever the stand was manually
put into its ON condition. To hold the stand in such condition, said gear shift lever, when operated by
the user, tripping the trigger member, to release the stand, which automatically retracts, to its OFF
condition, under the force of the spring. Here authors have not mentioned any use of sensors.

Claims
1. Series in which all-automatic mechanism work from generating electric impulses to
lifting the stand.
2. Speed sensor sense the motion and generate impulses, which are interpreted by
microcontroller that gives command to servomotor to actuate and lift the stand up.
3. Attachment of stand with servomotor as in claim 2.
4. Use of speed sensor in front wheel which having a connection with microcontroller as in
claim 2.
5. Mechanism claim to work when bike starts to move in forward direction and sensor sense
the signal of movement of bike in forward direction.
6. Once the stand retracts up it will never come down again until it will not retract down
manually.
7. Stand can retract down manually while driving but it will retract up back again as in
claim 2 until bike will not come at rest position.
8. Once bike come at rest position stand can lifted down manually and it will never retract
up unless bike starts to move in forward direction and mechanism starts again as in claim