WO2015080687A1 - Innovation apportée au système d'assistance à la propulsion des véhicules entraînés par pédalage - Google Patents

Innovation apportée au système d'assistance à la propulsion des véhicules entraînés par pédalage Download PDF

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Publication number
WO2015080687A1
WO2015080687A1 PCT/TR2014/000472 TR2014000472W WO2015080687A1 WO 2015080687 A1 WO2015080687 A1 WO 2015080687A1 TR 2014000472 W TR2014000472 W TR 2014000472W WO 2015080687 A1 WO2015080687 A1 WO 2015080687A1
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WO
WIPO (PCT)
Prior art keywords
gear
central shaft
worm
assist system
pedal
Prior art date
Application number
PCT/TR2014/000472
Other languages
English (en)
Inventor
Serhan AKMAN
Original Assignee
Akman Serhan
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Akman Serhan filed Critical Akman Serhan
Publication of WO2015080687A1 publication Critical patent/WO2015080687A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M6/00—Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
    • B62M6/40—Rider propelled cycles with auxiliary electric motor
    • B62M6/55—Rider propelled cycles with auxiliary electric motor power-driven at crank shafts parts

Definitions

  • Invention is concerned with a new propulsion assist system enabling to cover the same distance faster by spending less energy in the bicycles, pedaloes and similar vehicles run by pedalling.
  • While the energy expenditure of a gasoline car is 700 calories per kilometer and kg, this value is 200 calories for a bike.
  • a walking human energy expenditure is approximately 750 calories per kg and km.
  • the best way to compare the energy and efficiency of the transport systems is to calculate the energy consumption per kg in a km.
  • a walking man consumes about 3000 joules (750 calories) energy per kg in one km.
  • This value for bicycles is around 800 joules (200 calories) per kg in 1 km.
  • Bicycle can have 2, 3 or 4 units of wheels. One in the front and may be two in the back.
  • the unicycles are generally used for demonstration and acrobatics in the circus.
  • Shaft length issue is an issue that requires a lot of attention. There are two reasons for this. First, which is also considered to include the other reason is the condition called the chain line.
  • the ideal chain line is the line that brings . the third small gear rubles together with the largest chainwheel in the same line. That is, when a 113mm. shaft is replaced with a 121mm. shaft this line naturally slides to the right. This may result in failure chain's working properly.
  • Central shafts are sensitive products although they are now produced closed. In particular, since central shafts are at the bottom point where all the pipes (tubes) of the bicycle are connected, water drops are formed due to condensation inside the tubes after cold weather rides. In the Ease of installation also comes to the fore in closed systems. Things to consider before installing the central shaft are that of the center pivot bearing shaft should be clean, especially no lathe turnings on the shaft and grooves where shaft cover, will be mounted. Likewise, the bearing should be cleaned when the central shaft is changed or after removed to be maintained. Chainwheel need to be removed before central shaft. Therefore, the screws of chainwheel are removed with alien keys. Then the chainwheel extractor tool is mounted into the screw socket. The next step after removing the chainwheel is to remove the mid-shaft. To do.
  • the threads of the mid-shaft mounting tool need to be placed onto the teeth of the mid-shaft cover on the left side of the bike and then turn it.
  • the cover on the left is called BSA, and used in 99% of the central shafts, and it is unscrewed by turning counterclockwise direction. Italian grooves are rarely encountered in bikes, and the direction of the cover is inverse. After the cover is removed, the same procedure is required on the other side to remove the body of the central shaft, but this time with clockwise opening.
  • the same process is applied inversely in the central shaft assembly.
  • the first part to be mounted is the central shaft body.
  • Central shaft body and its threads should be lubricated first. If the bearing has been cleaned, the body is placed by turning counterclockwise from the right side of the Ebetor (L/R phrases already exist on the central shaft) in the opposite direction it. In the future to prevent to hear sound, etc. teeth of the mid-shaft cover should be lubricated with grease / dry oil thoroughly. The cover is attached from the left side by turning it clockwise.
  • the torque applied is an important point during the installation process. If you do not have a key with indicator "quite tight" installation should be performed. After the mid-shaft is placed, chainwheel installation is in the sequence. The final procedure is only to place the screws of the chainwheel into their sockets again and to tighten them. However, the point to be noted here is that absolutely need oil is used, that is, the gap between the chainwheel and central shaft should be dry.
  • bottom bracket axle It is the part that bears bottom bracket axle. It is in the proper shape and size of the central shaft. The sizes of bottom brackets in the bicycles sold in the market are usually the same.
  • Cycling gears are employed to provide increased efficiency according to the slope, to increase the speed of the bike and to climb the ramps more easily.
  • gearbox can roughly be divided into two groups. It consists of front and rear derailleurs, and there are two gear control levers around the handlebar to control them. One of them allows you to control the rear gears, and the other front gears, and when the speed increases according to your pedal revolution (60-100 min. speed) gear is shifted up, and the gear is shifted down when the speed decreases.
  • the small gear (1.) from the 3-gear set in the front gear is the main gear required for uphill.
  • Pre-intermediate gear (2) is ideal for straight roads.
  • Pre-large gear (3) is for the speed.
  • the largest gear in the rear derailleur is the uphill gear, when it gets smaller the flat road gear is reached and the smallest gear is the speed gear.
  • bike is a very effective means of transportation. It is possible to ride long distances using less power. Longdistance bicycle races and long tours can be made as a pleasurable pastime. While riding a bike for a few hours is an exhilarating experience for the trained persons, it is considered as a sweaty, tiring and discomfortable activity for the untrained people. In places with slopes, it becomes more difficult to ride a bicycle, so people prefer cars and motorcycles.
  • the use of bicycle that is cheap, reliable, quiet, easily controlled, surrounded by nature and making an environmental journey possible, and enabling us to do exercise should be facilitated and its prevalence should be increased.
  • Electric bikes are the bicycles that have created an alternative sensitive the environment to the transportation problem of cycling short distances within the city.
  • the number of electric and regular bicycles is increasing rapidly with the rise in gasoline prices.
  • These bikes are widely used to go to work from home, traveling and to go to school.
  • the electric bikes on the market are 250W and over in general.
  • the greater power means the greater the electric bike motors.
  • a large motor and a larger battery will increase weight significantly.
  • Their rough images and the fact that they are manufactured in 4-5 times weights of a normal bike weight constitute a very serious obstacle in front of the ability to go with pedaling when battery runs out of charge.
  • the motor in the wheel hub or in the bottom bracket axle this lightweight provides these light vehicles with the ability to move using the energy in the battery. They are administered by the control panel or the buttons on the handlebars.
  • the front wheel designed by using hub motors allow you to turn your old bicycle into an electric bike. Both your revolving strength and revolving number of cycles are considered, and when you have made an automatic choice, you feel that the system runs as a whole. All this information is displayed in multifunctional odometer, a visual part of the system.
  • Electric motors used in electric bicycle are not different from those used in other vehicles. That is, electric bicycles, solar vehicles, electric scooters and many more light electric vehicles use Hub engines. The most important rationale behind the choice of these engines is that they do not require an additional transmission mechanism. However, since the requirement for the power over 180 watts makes a big battery also mandatory. Thus, it makes a bike as heavy as a motorcycle. Assistive Electric Bicycle
  • the most commonly used gears whose axis do not overlap are the worm-gear sprockets. These gears are the main gear types used particularly in the reduction gears as they can operate flicker-free, quietly at very large reduction ratios and at very high speeds.
  • worm-gear pair the axis of the worm is located in tangential position to the gear.
  • the pitch angle is less than 50, these gears can operate as self-locking. In other words, if rotational movement is not transferred through the worm but gear, worm does not reverse.
  • Worm gears are manufectured as right or left according to the operating status with 1 , 2, 3, 4, and may be more starts.
  • the reduction ratio in the worm gears is proportional to the start number of the screw (the number of stages on the screw). Maximum reduction ratio can be obtained from one-start worm gears. As the number of the start (step) on the worm gear increases, the reduction ratio is reduced at the same rate. It is possible to achieve high reduction with worm gears in a very small area.
  • the system is simple, durable and economical. It is widely applied in many fields. Bearing rotatable in one direction (locked)
  • the propulsion assist system we have explained in our patent document with the application number TR2013/03543 consists of more parts for power, transmission.
  • the installation of parts increases labor costs and maintenance costs. Since it is not a one-piece structure, some difficulties arise in mounting on a bike. Combining with clamps requires care and experience. In addition, mechanical intervention is required to deactivate the system when the battery runs out.
  • the invention is about of the more economical use of the power and energy applied for the movement of a bike and a propulsion assist system facilitating pedaling without losing pedaling property.
  • Electric motor integrated with worm gear mechanism and bottom bracket axle that is integrated with worm gear mechanism forms a unitary system.
  • Clamp system is not required to secure the motor on the bike. Instead, it is mounted on the covers of the bottom bracket. It has become extremely easy for an average cyclist to apply the new propulsion assist system on the bicycle s/he owns.
  • wormgear mechanism generaly include locking device in the opposite direction as a working principle, it is impossible to be rotated by reduction gear.
  • a one-way selflocking roll bearing connecting reduction gear to the bottom bracket axle has been mounted so that a rider can rotate the pedal.
  • the fact that worm gear mechanism has an opposite direction self-locking device will prevent the breakage or damage of bearing nails and when the electric motor is not active, the cyclist will not have to spend power to rotate the electric motor
  • the reduction ratio in worm gear mechanism is determined by the number of teeth in the reduction gear and in the number of start (number of stages) and the number of teeth on the worm gear.
  • Worm gear has been produced with two different number of starts(two different stage systems).
  • the worm gear with at least one start, preferably containing two-starts revolves the reduction gear connected to the bottom bracket axle wirh one-way locked bearing.
  • the different gear ratios can be easily obtained through the movement mechanism of the worm on the wedge on the motor shaft by applying the desired stage on the reduction gear.
  • the levels are selected by moving the worm gear formed with at least two starts on the motor shaft the to provide the appropriate reduction rate in normal driving fast driving or driving uphill.
  • the invention consists of an electric motor (1), a motor shaft (2), the worm screw having at least two-start and at least two stages (3), a drive mechanism (3.1) that can ensure forward and reverse motion at least one tooth the worm screw (3) on the motor shaft (2), a reduction gear (4), , a one way locked bearing (5) connecting reduction gear (4)to the central shaft (6), central shaft (6), the cassette (7) and the casette cover (8) parts.
  • Invention is an integral structure with an electric motor (1) the system formed with the improved worm gear mechanism mounted on the bottom bracket with the central shaft (6) by interlocking to the cassette(7) that bears central shaft(6). It is possible to mount this structure on any kind of bikes. After the chainwheel, crank arm, cassette and central shaft on the bike crankset bottom bracket have been removed, the propulsion assist system that has become combined with the central shaft(6) and cassette(7) is mounted into the bottom bracket.
  • the system consisting of an electric motor (1), a worm gear (3) and a reduction gear (4) is an integrated structure unified with the centershaft (6) and cassette (7). Chainwheel and pedal arm are mounted onto the system and pedal is mounted on the chainwheel and crank arm.
  • Central shaft (6) is located in the bearings in the container of worm gear system, which is one of the constituent parts of the propulsion assist system, within the bottom bracket of the bicycle (or cassette). Suitable metal selection, hardening procedures and resistance in sufficient thickness are performed for central shaft(6).
  • Worm screw (3) is placed in the bearings in the container of the worm system.
  • the newly designed propulsion assist system (6) is a system integrated with central shaft and cassette (7) , and it is mounted rigidly bilaterally to the central hub of the bicycle (8) with the help of the cassette covers. This powerful connection is sufficient for fixing the propulsion assist system on the bicycle.
  • the invention also includes a movement mechanism (3.1 ) that adjusts the rotation speed of the reduction gear (4) of the electric motor (1 ) by moving the worm screw(3),which runs as the trigger mechanism for increased torque to be transferred to the pedal without changing the speed of the engine in order to use the motor power efficiently, at least one tooth forward and backward.
  • the worm screw (3) has a screw structure formed with at least two stages (the number of start on the worm screw is like the continuation of at least two different screws each other and are converted into a single screw). Though it seems like a single screw, the number of start is different on both sides of the screw. Both sides of the worm screw (3) are consistent with the reduction gear teeth.
  • the displacement of worm screw (3) on the reduction gear will also modify the contacting stage of the of the worm screw(3) with reduction gear (4).
  • the movement mechanism (3.1 ) can set which part of the worm screw (3) contacting the reduction gear (4) to operate thanks to at least one stage forward stage and one stage backward gap via the wedge connection where electric motor (1 ) connects with worm screw (3).
  • worm screw (3) is formed from a single stage instead of at least two different levels, the system also runs. However, the efficiency will be low as the gear system lacks.
  • Propulsion assist system can be implemented without making structural changes on the existing structure of the bike and is compatible with the bottom bracket of the bicycles sold in the market.
  • Employing the existing gears the force transferred from the propulsion assist system and the pedal power can be efficiently converted into motion.
  • smaller batteries that wil not increase the weight of the bike can be used.
  • by activating the trigger system to contribute to the acceleration the number of teeth of the worm screw(3)contacting the reduction gear (4) is reduced.
  • the invention is the propulsion assist system for new vehicles run by pedaling without changing the current structure of bicycles, that is, without involving in the motorcycle class and damaging the sport utility of bikes.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)
  • Gear Transmission (AREA)

Abstract

L'invention concerne un nouveau système d'assistance à la propulsion permettant de parcourir la même distance plus rapidement en dépensant moins d'énergie sur les bicyclettes, pédalos et véhicules similaires mûs par pédalage.
PCT/TR2014/000472 2013-11-26 2014-11-26 Innovation apportée au système d'assistance à la propulsion des véhicules entraînés par pédalage WO2015080687A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR201313795 2013-11-26
TR2013/13795 2013-11-26

Publications (1)

Publication Number Publication Date
WO2015080687A1 true WO2015080687A1 (fr) 2015-06-04

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Application Number Title Priority Date Filing Date
PCT/TR2014/000472 WO2015080687A1 (fr) 2013-11-26 2014-11-26 Innovation apportée au système d'assistance à la propulsion des véhicules entraînés par pédalage

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107521608A (zh) * 2017-08-29 2017-12-29 黄大成 一种基于无线手柄控制的自行车助力器及装配该助力器的自行车
EP3680161A1 (fr) 2019-01-11 2020-07-15 Rolless GmbH Engrenage à vis sans fin et entraînement auxiliaire pour un véhicule
EP4060203A1 (fr) * 2021-03-16 2022-09-21 MAHLE International GmbH Entraînement électrique de bicyclette

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01186487A (ja) * 1988-01-19 1989-07-25 Mitsuba Electric Mfg Co Ltd 動力補助式自転車の動力伝達装置
EP0755854A1 (fr) * 1995-07-25 1997-01-29 Merida Industry Co., Ltd. Dispositif de traction électrique pour bicyclette

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01186487A (ja) * 1988-01-19 1989-07-25 Mitsuba Electric Mfg Co Ltd 動力補助式自転車の動力伝達装置
EP0755854A1 (fr) * 1995-07-25 1997-01-29 Merida Industry Co., Ltd. Dispositif de traction électrique pour bicyclette

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107521608A (zh) * 2017-08-29 2017-12-29 黄大成 一种基于无线手柄控制的自行车助力器及装配该助力器的自行车
EP3680161A1 (fr) 2019-01-11 2020-07-15 Rolless GmbH Engrenage à vis sans fin et entraînement auxiliaire pour un véhicule
EP4060203A1 (fr) * 2021-03-16 2022-09-21 MAHLE International GmbH Entraînement électrique de bicyclette

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