Chainless BicycleChainless Bicycle

Chin, Hsu-ShengChin, Hsu-ShengFan Chiang, Tsung-LinFan Chiang, Tsung-Lin

Chin, Chih-ChingChin, Chih-Ching

E-mail: chunchin@ms4.hinet.netE-mail: chunchin@ms4.hinet.net

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This newly-invented chainless bicycle This newly-invented chainless bicycle comprises one frame, two wheels and two comprises one frame, two wheels and two gear units. Each gear unit includes one pedal gear units. Each gear unit includes one pedal gear, odd number of idler gears, and one gear, odd number of idler gears, and one bearing gear. Odd number of idler gears are bearing gear. Odd number of idler gears are located between the pedal gear and bearing located between the pedal gear and bearing gear; therefore, it solves the problem of gear; therefore, it solves the problem of chain falling off, and features the advantages chain falling off, and features the advantages of simple structure, solid parts, and hard to of simple structure, solid parts, and hard to damage; also the size and component layout damage; also the size and component layout is less limited.is less limited.

Structure of Chainless BicycleStructure of Chainless BicycleStructure of Chainless BicycleStructure of Chainless Bicycle

The well-know bike driving method is that The well-know bike driving method is that the rider pedals to revolve the pedal gear, the rider pedals to revolve the pedal gear, and then drive a chain and a sprocket linked and then drive a chain and a sprocket linked with rear wheel which drives the rear wheel. with rear wheel which drives the rear wheel. This structure is more complicated. Besides, This structure is more complicated. Besides, this mechanism with chain driving has the this mechanism with chain driving has the shortcomings of weak parts, chain falling off, shortcomings of weak parts, chain falling off, and easy to damage. Moreover, the pedal and easy to damage. Moreover, the pedal gear must be located away from the rear gear must be located away from the rear wheel; therefore, the size and component wheel; therefore, the size and component layout are more limited.layout are more limited.

Structure of Auxiliary WheelStructure of Auxiliary WheelStructure of Auxiliary WheelStructure of Auxiliary Wheel

The auxiliary wheel body comprises two The auxiliary wheel body comprises two auxiliary sprocket wheels, a gear assembly auxiliary sprocket wheels, a gear assembly and an auxiliary rear folk, the gear assembly and an auxiliary rear folk, the gear assembly comprises two active gears and two passive comprises two active gears and two passive gears, the auxiliary sprocket wheels are gears, the auxiliary sprocket wheels are connected pivotally to both sides of the shaft connected pivotally to both sides of the shaft of the auxiliary wheel, the active gears are of the auxiliary wheel, the active gears are connected pivotally to the auxiliary rear folk connected pivotally to the auxiliary rear folk on both sides of the auxiliary wheel, the pedal on both sides of the auxiliary wheel, the pedal mechanism of the auxiliary wheel body drives mechanism of the auxiliary wheel body drives the active gears to drive the auxiliary sprocket the active gears to drive the auxiliary sprocket wheels through the passive gears, and the wheels through the passive gears, and the auxiliary wheel is driven to rotate.auxiliary wheel is driven to rotate.

Joint Configurations Joint Configurations (Type1)(Type1)

Articulated MachineArticulated Machine

Parts of Articulated Parts of Articulated MachineMachine

Joint Configurations (Type 2)Joint Configurations (Type 2)

Twin-Frame Chainless BicycleTwin-Frame Chainless Bicycle has a set of has a set of coupling bars. Four rows of perpendicularly-coupling bars. Four rows of perpendicularly-arranged springs lined between the bars. arranged springs lined between the bars. Therefore, the bicycle can lean with the Therefore, the bicycle can lean with the primary bicycle and auxiliary wheel primary bicycle and auxiliary wheel paralleled within a limited range to prevent paralleled within a limited range to prevent overturn. Springs are interlaced between overturn. Springs are interlaced between ends of joint configuration, which can resist ends of joint configuration, which can resist deformation and therefore maintain the deformation and therefore maintain the stability of both primary bicycle and stability of both primary bicycle and auxiliary wheel bodiesauxiliary wheel bodies. .

Finished Product 1Finished Product 1

Finished Product 3Finished Product 3

Finished Product 5Finished Product 5

In case the primary bicycle and auxiliary wheel In case the primary bicycle and auxiliary wheel bodies encounter height discrepancy or are bodies encounter height discrepancy or are operated on uneven ground, for example, the operated on uneven ground, for example, the ground level in which auxiliary bicycle located ground level in which auxiliary bicycle located is higher than that of principal bicycle in the is higher than that of principal bicycle in the left side, the left end of coupling link will lean left side, the left end of coupling link will lean downwards as shown in the left exhibition. downwards as shown in the left exhibition. When this three-wheeled bicycle is turning, for When this three-wheeled bicycle is turning, for instance, turning right, it shall be like that instance, turning right, it shall be like that shown in the right exhibition. shown in the right exhibition.

To Change Shape

Uneven Ground Turning Right

The invented special bicycle for multiple persons The invented special bicycle for multiple persons to ride at the same time can be divided into two to ride at the same time can be divided into two types. One of them is the tandem bicycle with types. One of them is the tandem bicycle with seats in front-and-rear structure. The other type seats in front-and-rear structure. The other type has seats in parallel structure. However, it has seats in parallel structure. However, it cannot perform inclination action, implying that it cannot perform inclination action, implying that it cannot make speedy turns. When it runs on cannot make speedy turns. When it runs on rough and uneven surface, it may even overturn. rough and uneven surface, it may even overturn. Twin-Frame Chainless BicycleTwin-Frame Chainless Bicycle has the merits of has the merits of both types, which refer to the dexterity in the both types, which refer to the dexterity in the control of seats in front-and-rear structure as control of seats in front-and-rear structure as well as the friendship building and entertaining well as the friendship building and entertaining effects of seats in parallel structure, but has no effects of seats in parallel structure, but has no defect of the two types.defect of the two types.

AdvantagesAdvantages

․ ․ Size and component layout less limitedSize and component layout less limited

․ ․ Solves the problem of chain falling offSolves the problem of chain falling off

․ ․ High driving safetyHigh driving safety

․ ․ Quickly to installQuickly to install

Thank You!Thank You!

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