The present invention relates to a powered bicycle. The present invention particularly relates to an independent hi-ride power drive engine designed for bicycles that can be installed in any manually powered bicycle or can be installed in any new bicycle thus converting it to an electric bicycle. The hi-ride drive engine can be fitted in any existing bicycle and in all new bicycles. The hi-ride power drive engine can convert any manually powered bicycle into an electric bicycle.
BACKGROUND OF THE INVENTION
An electric bicycle, also known as an e-bike, power bike or booster bike, is a bicycle with an integrated electric motor which can be used for propulsion. Many kinds of electric- bike also known as e-bikes or e-bicycle are available worldwide, from e-bikes that only have a small motor to assist the rider's pedal-power (i.e., peddles) to somewhat more powerful e-bikes which tend closer to moped-style functionality.
Usually, the concept of e-bicycles known as e-bike came in order to provide electric mobility without any license or registration requirement. For bicycle rider, no license or registration is required for a two wheeled battery operated vehicles if vehicle complies with the conditions as mentioned in Central Motor Vehicles Act Rules (CMVR) under which it shall not be deemed to be a motor vehicle.
Conventionally, e-bicycles use hub motors fitted inside the wheel to make e-bike compact.
The installation of hub motor in the wheel of the bicycle adversely affects the load taking capacity of the bicycles and consumes huge current while running at high loads and chances of damage to the motor are very high. At the same time, all two wheeled battery-operated vehicles are required to comply with CMVR in order to avoid the requirement of license or registration,
Hub motors put a restriction on curb weight of the vehicle which is usually 90-120 kgs for an electric bicycle having motor output power not more than 0.25KW. On the other hand, roadster bicycles used by millions of Indians usually weigh around 25-30 kgs and adding

cyclist weight of 75 kgs put a risk for use of hub motors. Another alternative to this problem being adopted by many manufacturers is to make light weight bicycles that install light weight batteries. This option makes an electric bicycle much expensive beyond the reach of common man and till date no much sales have been witnessed in this sector.
Further, installation of hub motors also poses a challenge on roadster bicycles with respect to wheel challenges such as no. of spokes, rim sizes etc.
Another alternative to hub motors for e-bikes is mid-drive motors that enjoy load taking capacity, but the entire unit has to be made extremely compact due to its design limitations. Hence e-bikes with mid drive motors again turn out to be an expensive. Further, it cannot be retrofitted to any bike.
Considering the above drawbacks, it is desirable to provide an independent drive system for bicycle that eliminates the aforesaid drawbacks and provides rider an option to convert their normal bicycle into an electric bicycle at a nominal cost and also allowing rider at the same time to take substantial load on the bicycle while ensuring compliance with CMVR.
SUMMARY OF THE INVENTION
The present invention of hi-ride drive engine has been designed keeping in view the challenges that come up in conventional electric bicycles. The present invention is commercially viable from manufacturer side as well as consumer side. The independent power drive system developed can convert any bicycle into an electric bicycle thus not asking cyclist to invest in bicycle infrastructure again and at the same time allow substantial load taking capacity while ensuring compliance with CMVR.
All the parts of the engine have been designed keeping in view the practical aspects for installation in any of the bicycles.
The hi-ride power drive engine can convert any manually powered bicycle into an electric bicycle by having a motor attached beneath the seat tube, the motor rotates the rear wheel of the bicycle through chain sprocket attached to the gear box, which in turn rotates the freewheel attached to left hand side of rear wheel hub thus giving force to rear tyre for

circular movement, a rechargeable and detachable battery pack mounted on the frame attached to saddle pillar of the bicycle and a controller that helps rider to control speed of the bicycle with the help of throttle.
In one embodiment of the invention, there is provided an apparatus of hi-ride independent power drive engine that can convert any bicycle into an electric bicycle which includes a motor 102 attached to the bicycle frame through a cover 302 attached to the motor stand 301 fixed with a seat tube 204. The motor stand 301 and cover 302 has been designed in such a manner that it can take substantial load and avoid any vibration during start and running period. In order to derive right mix of rotations per minute (RPM) and torque, a detachable gearbox 103 having gears inside attached to motor with a plate 401 having a chain sprocket 402 that rotates the rear wheel 104 of the bicycle through chain 105 and freewheel 106 thus allowing cyclist to either manually pedal / electric mode / both.
In the present embodiment of the invention a detachable battery pack 107 is installed at the back of the bicycle inside the frame 201. Frame 201 is attached through a clip 203 to seat tube 204 and strips attached to rear wheel 104. Battery pack 107 has a cable lock 117 passing through it and a power connector 116. Side Covers 110 which cover entire engine. A power lock 115 is fixed inside cover 110. The controller 111 is attached to the plate 401 next to gear box 103. The controller 111 connect throttle 112, motor, battery and power lock and controls all the components of the bicycle. Throttle runs with hand twist wherein rider can increase / decrease speed as per requirements.
In the present embodiment of the invention a freewheel 106 is threaded to the left-hand side of hub to ensure separate manual and electric movement i.e. when manually pedaled only, no electric engine runs and electric mode is on, no movement in pedals occur thus giving rest to rider legs. However, at the same time rider has the option to manually pedal along with electric force to increase speed and mileage.
In the present embodiment of the invention an adjusting stand 109 is attached to bicycle frame near freewheel 106 for chain adjustment. In order to ensure that this system runs in all bicycles, an adjusting stand 109 has been fixed in the frame of bicycle near to freewheel to tighten or loosen the chain as per requirements.

In the present embodiment of the invention the battery pack 107 has two provisions 1) cable lock passing through which protect battery box and entire bicycle and 2) power connector attached in it for running and charging of bicycle. For running, a power cable coming out from controller is required to be connected to battery pack for power supply to system and when system is not in use, power cable can be disconnected, and charger cable can be connected in the same power connector 116 for charging the batteries attached to it for running. This has been done in order to make battery box detachable and with this a rider can charge batteries at any place as per their convenience.
In the present embodiment of the invention, there is provided a method of speed adjustment depending on the load capacity of electric bicycle. Wherein, throttle 112 comes with a function of three speed switch viz. Low, Medium and High. Speed function ensures maximum mileage at different loads. For example, if there is slope or traffic etc., then it is advisable to run at medium function speed to get maximum mileage. In case of ideal riding conditions, high speed is recommended, and maximum mileage is obtained.
One of the objectives of the present invention is to convert an existing bicycle into electric bicycle in a cost-effective manner.
Another objective of the present invention is to make green motorized mobility available to all at economical price.
Another objective of the present invention is to provide a unique engine that can be installed in any bicycle including roadster bicycles.
Another objective of the present invention is to allow roadster cyclists to carry substantial load.
Another objective of the present invention is to provide electric bicycle which run at speed no more than prescribed under CMVR rules.
Another objective of the present invention is to provide electric bicycle which can be used by any man/woman for daily commute and local area commute.

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BRIEF DESCRIPTION OF THE DRAWINGS
The foregoing and other objects, features, and advantages of the invention will be apparent 5 from the following detailed description taken in conjunction with the accompanying drawings, wherein:
Fig. 1A illustrates an electric bicycle with a hi-ride power drive system in accordance with the present invention. 10
Fig. 1B illustrates a side view of the hi-ride power drive system in accordance with the present invention.
Fig. 1C illustrates a perspective view of the hi-ride power drive system in accordance with 15 the present invention.
Fig. 2 illustrates an assembly of frame, battery box, side covers, top cover and the way it is attached to the seat tube in accordance with the present invention.
20 Fig. 3 illustrates a motor stand and cover designed for mounting of motor in accordance with the present invention.
FIG. 4 illustrates a plate designed to fix gear box and controller in accordance with the present invention. 25
FIG. 5 illustrates a gearbox that incorporates helical gears, ball bearing shafts and chain sprocket in accordance with the present invention.
FIG. 6 illustrates a motor attached to the motor stand with gearbox attached to it that has a 30 chain sprocket with a chain rotating the freewheel attached to the hub on left side of e-bike in accordance with the present invention.
FIG. 7 illustrates a frame that is designed for holding battery box and covered by a plate from top in accordance with the present invention.

7
FIG. 8 illustrates a removable battery box with cover that has cable lock passing through and power lock connecting to it in accordance with the present invention.
5 FIG.9 illustrates side covers with power lock in accordance with the present invention.
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the presently disclosed invention will now be described in detail with 10 reference to the drawings wherein like reference numerals designate identical or corresponding elements. In the drawings and in the description, the term "high", "low" or "medium" refers to the speed of the bicycle.
As used herein, the term "hi-ride” refers to high speed with respect to the bicycle for 15 converting the manually powered bicycle to electric bicycle. However, the terms are not structurally limiting unless the context indicates otherwise.
Moreover, the Figures may show simplified or partial views, and the dimensions of elements in the Figures may be exaggerated or otherwise not in proportion for clarity. In addition, the 20 singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. In addition, where reference is made to a list of elements (e.g., elements a, b, c), such reference is intended to include any one of the listed elements by itself, any combination of less than all of the listed elements, and/or a combination of all of the listed elements.
25 Referring to fig. 1A illustrate an electric bicycle with a hi-ride power drive system in accordance with the present invention. The electric bicycle 100 comprises an independent hi-ride drive engine 101 designed for bicycles that can be installed in any manually powered bicycle thus converting it to an electric bicycle.
30 At the center of the bicycle 100 beneath the seat, is a motor 102 attached to the bicycle frame with a detachable gearbox 103 that rotates the rear wheel 104 of the bicycle through chain 105 and freewheel 106 thus allowing cyclist to either manually pedal 108 / electric mode / both. A motor stand 301 to adjust the chain 105 as per bicycle model is also provided.

8
A detachable battery pack 107 is installed at the back of the bicycle. The battery pack is made up of fibre / plastic. The battery pack contains Lead acid batteries arranged in series to make 24V/36V/48V/60V depending upon mileage customer require. These lead acid batteries are specially designed for electric bicycle. At the same time, lithium ion batteries can also be 5 installed in the battery pack. It has been made detachable from e-bike so that rider can charge batteries at any place they desire.
The side covers 110 are attached on both the sides to protect battery pack 107, gear box 103, motor 102 and controller 111. The Battery pack 107 is further protected from top by cover 10 114.
Throttle 112 is affixed in handle bar 113 of the bicycle and is electrically connected to controller 111. Throttle runs with hand twist wherein rider can increase / decrease speed as per requirements. Throttles comes with an option of power lock / battery indicator / reverse 15 function / speed control / horn also. The present invention use throttle 112 with three level speed switches viz. Low, Medium and High. Speed function ensures maximum mileage at different running conditions.
Referring to fig. 2 Illustrate an assembly of frame 201, battery box 107, side covers 110, top 20 cover 114 and the way it is attached to the frame 202 in accordance with the present invention. The metal frame 201 is fixed to the frame 202 through a clip 203. The metal frame 201 can be attached to the seat tube 204 also which depends upon bicycle model. The frame 201 is made of metal in order to hold multiple batteries in it and at the same time it provides extra load taking capacity to rider. The metal frame 201 is covered by a cover 114 from top. 25 A detachable battery pack 107 slides into the metal frame 201 and it can be taken out also in similar manner. The battery pack 107 has been provided with hole on both the sides to enable cable lock pass through to protect battery box while running and when not in use, cable lock can pass through both battery pack and tyre thus protecting the entire bicycle. The Battery pack 107 comes with a power socket fixed in it which is used for running or charging of 30 batteries. The Batteries inside the pack are connected to this power socket and in order to charge, charger plug is connected to socket to charge batteries and for running of e-bike, a power lock from controller gets connected to this socket to take current from batteries. This principle makes entire pack detachable from e-bike and can be charged anywhere. The side covers 110 are fixed to left and right side to protect entire system.

9
Referring to fig. 3. illustrate a motor stand 301 and cover 302 designed for mounting of motor 102. The motor 102 is fitted into a cover 302, that is attached to the motor stand 301. This system ensures adequate support to the motor 102 while running. The motor cover 302 can be 5 developed into different shapes so that any kind of motor can be installed into the e-bike. The present invention uses both brushless and brush DC Motor 102 of output capacity up to 250 W only as per CMVR rules. The motor is attached through a metal frame 201 fixed beneath the seat of the cyclist. The motor 102 is coupled with gearbox 103 that is pulling rear wheel of the bicycle through a freewheel 106 and chain 105. However, the present invention use 10 different types of motor with different capacity as per the requirement.
The hi-ride power drive system can convert any of their existing cycle into electric cycle by installing lead acid batteries and at the same time allowing rider to carry substantial additional load on their e-bike, the motor is fixed with the cycle frame rather than fitted 15 inside the wheel as hub motors do.
Referring to fig. 4 is a plate 401 designed to fix gearbox 103 and controller 111. The gearbox 103 has a chain sprocket 402 attached to the gears that is used to rotate freewheel 106 attached with rear wheel 104 through chain 105.
20
The controller 110 is attached to the plate 301 adjacent to gearbox. The controller 110 connect throttle, motor, battery and power lock and controls all the components of the bicycle. Controller takes voltage from battery pack 107 and gives output to motor in proportion to current required to ride an e-bike. It further allows rider to increase or decrease
25 speed of the e-bike with the help of throttle 111. Maximum cut off current for controller has been kept in accordance with system requirements so that if excessive load is put on system, controller will switch off after peak temperature reached thus protecting the entire system. Controller has an in-built provision of speed levels viz. low, medium and high and enable rider to switch to desired level through a switch given in throttle.
30
Referring to fig. 5 is a gearbox 103 that incorporates helical gears 501, ball bearing 503, shafts 502 and chain sprocket 402. The motor 102 coupled with gearbox 103 is attached to motor stand 301 with seat tube 204. It is essential to derive right mix of torque and rpm from motor 102 so that efficient speed and mileage can be provided to the bicycle and this is done

10
with the help of gears. A gear box 103 has been developed with helical gears 501, shafts 502, ball bearing 503 and chain sprocket 402. One of the helical gears 501 gets fixed to motor shaft 502 with a feather key 504 and to restrict any dis-alignment in the gear at the top there is a nut 505 threaded to motor shaft. Upon giving power to the motor 102 by the controller 5 111, the motor shaft rotate and in turn rotates other helical gears 501 and shafts 502 inside the gearbox 103 which attached in alignment with each other. The last shaft has chain sprocket 402 attached to it through threads which rotates upon working of the motor 102. Chain is installed on this chain sprocket 402 to rotate rear wheel of bicycle. The gear ratio has been arranged in such a manner that rear wheel 104 rotates at a defined RPM between 170-250 10 RPM adjusted on the basis of bicycle tyre so that speed of the vehicle does not exceed the limit prescribed by CMVR and maximum mileage gets achieved.
In a developing country like India, a cyclist usually carries substantial load on their bicycle which can be in the form of 1-2 more riders or any other form of load. Thus, it is essential
15 that right torque and rpm is derived from motor else chances of damage increases. In our invention, rider can vary speed at three levels, low, medium and high and this has been done to derive right RPM for e-bike. For example, it is advised that when there is more than single rider on a e-bike, it should run at medium speed so that maximum mileage can be achieved. Referring Fig.6 illustrates a motor attached to the motor stand with gearbox 103 attached to it
20 that has a chain sprocket 402 with a chain 105 rotating the freewheel 106 attached to the hub on left side of e-bike and it also movement of rear wheel through chain sprocket.
Conventionally all the bicycles come with a freewheel 106 threaded on the right side of the hub fixed in rear wheel 106. In present invention, the freewheel 106 is threaded to the left
25 hand side of the hub also to ensures that when electric ridden, no movement in right side freewheel happens thus no movement in pedal 108 occurs, allowing rest to rider legs and at the same time, when manually pedaled, no freewheel 106 attached to left side hub rotates, thus avoid cyclist to put any extra force. However, when electric ridden, rider has the option to manually pedal along with electric force to increase speed and mileage.
30
Referring to fig.7 is a frame 201 designed to hold battery pack 107 and covered by a plate 114 by top. The frame 201 has a cover 114 at the top to protect battery pack 107 and at the same time, allow rider to carry additional weight on it.

11
Referring to fig. 8 is a removable battery box 107 with cover 114 that has cable lock 117 passing through and power connector 116 connecting to it. The battery box is designed to hold batteries. The box has been designed in such a way that adequate air ventilation goes into it thus protecting the batteries and ensure any gas that generates out while charging 5 comes out and also avoids any liquids from going into it. In order to provide convenience to rider to charge batteries at their convenient place, the entire battery pack 107 is made detachable. A port 801 is provided in battery pack 107. For running of bicycle, a power connector 116 coming from the controller 111 is required to be connected into this port that supplies necessary working voltage to motor and when not in running, power connector 116
10 can be disconnected from the port and power charger cord can be connected to the port 801 to charge battery pack. Further, the box is provided holes 802 on both the sides so that cable safety lock 117 can pass through thus protecting battery pack 107 from coming out while running and also when e-bike is not in use, cable lock can simultaneously pass through rear wheel 104 that provides protection to e-bike when not in use.
15
Referring to fig. 9 are side covers 110 with power lock 115 that protects the entire system from outside. They cover the battery box from left and right and further cover the motor 102, gearbox 103 and controller 111. In the right-side cover, a power lock 115 is given that has a key function that allows or restricts current flow at unlocking / locking position respectively.
20
Although this invention has been disclosed in the context of certain preferred embodiments and examples, it will be understood by those skilled in the art that the present invention extends beyond the specifically disclosed embodiments to other alternative embodiments and/or uses of the invention and obvious modifications and equivalents thereof. Thus, from
25 the foregoing description, it will be apparent to one of ordinary skill in the art that many changes and modifications can be made thereto without departing from the spirit or scope of the invention as set forth in the claims.
Accordingly, it is not intended that the scope of the foregoing description be limited to the 30 exact description set forth above, but rather that such description be construed as encompassing such features that reside in the present invention, including all the features and embodiments that would be treated as equivalents thereof by those skilled in the relevant art.

The scope of the present invention herein disclosed is not limited by the particular disclosed embodiments described above but determined only by a fair reading of the appended claims.

LIST OF REFERENCE NUMERALS
100 Bicycle
101 Hi-ride power drive Kit
102 Motor
103 Gearbox
104 Rear Wheel
105 Chain
106 Free Wheel
107 Battery Box
108 Pedal
109 Adjusting stands
110 Side Cover
111 Controller
112 Throttle
113 Handle
114 Top Cover
115 Power Lock
116 Power Connector
117 Cable lock
201 Metal Frame
202 Frame
203 Clip
204 Seat Tube
205 Strip
301 Stand
302 Cover
401 Plate
402 Chain Sprocket
501 Helical Gear
502 Shaft
503 Ball Bearing
504 Feather Key
505 Nut
801 Port

WE CLAIM:

A hi-ride power drive engine (101) to convert a manually powered bicycle into an electric bicycle (100) comprising:
a motor (102) attached to the bicycle frame through a cover (302);
the cover (302) attached to a motor stand (301) fixed with a seat tube 204;
a detachable gearbox 103 attached to the motor 102 with a plate 401;
a battery pack (107) installed at the back of the bicycle inside a frame (201); and
a controller (111) attached to the plate (401) next to gear box (103).
The hi-ride power drive engine as claimed in claim 1, wherein side covers (110) attached on the bicycle to protect battery pack (107), gear box (103), motor (102) and controller (111).
The hi-ride power drive engine as claimed in claim 1, wherein the metal frame (201) attached to a frame (202) through a clip (203), the seat tube (204) attached to the metal frame (201), the metal frame (201) is covered from the top cover (114).
The hi-ride power drive engine (101) as claimed in claim 1, wherein the battery pack (107) has a cable lock (117) passing through it and a power lock 115 connecting to a power connector (116), a port (801), and a hole (802) on both side of the battery pack (107).
The hi-ride power drive engine (101) as claimed in claim 1, wherein the controller (111) connects to a throttle (112), motor (102), battery and power lock and controls all the components of the bicycle (100).
The hi-ride power drive engine (101) as claimed in claim 1, wherein the gearbox
(103) comprising helical gears (501), ball bearing (503), shafts (502) and chain
sprocket (402):
wherein the helical gears get fixed to motor shaft (502) with a feather key (504);
the chain sprocket (402) attached to the gears; and
a nut (505) threaded to the motor shaft.

The hi-ride power drive engine as claimed in claim 1, wherein an adjusting stand (109) attached to bicycle frame (202) near freewheel (106) for chain adjustment.
The hi-ride power drive engine as claimed in claim 1, wherein the throttle (112) comes with a function of three speed switch which includes low, medium and high speed.
The hi-ride power drive engine as claimed in claim 1, wherein the motor (102) includes brushless or brush DC motor.
). A method of converting any manually powered bicycle into an electric bicycle (100) by a hi-ride power drive engine (101) as claimed in claim 1, comprising the steps of:
a motor (102) attached beneath the seat tube (204) that rotates the rear wheel (104) of the bicycle through chain sprocket;
the chain sprocket (402) attached to the gear box (103) which in turn rotates the freewheel attached to left hand side of rear wheel hub;
a rechargeable and detachable battery pack (107) mounted on the frame 201 attached at the back of the bicycle (100); and
a controller (111) that helps rider to control speed of the bicycle with the help ofthrottle(112).