Dual Riding and Driving Tricycle

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Dual Riding and Driving Tricycle

• Chin, Chun
• Fan Chiang, Tsung-Lin
• Chin, Hsu-Sheng
• Su, Pern-Hong
• E-mail chunchin_at_ms4.hinet.net

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• Bicycle is a very popular transportation tool and
  sports equipment. However, to the physically
  handicapped persons, including the hearing or
  visually impaired, they can just envy the normal
  people for their carefree rides on bicycles, and
  cannot enjoy riding it at all. And the safety of
  bicycle ride by children or old people also makes
  people feel worry about it. ?Dual Riding and
  Driving Tricycle?is a bicycle available for two
  people to ride together side by side. The bicycle
  body is composed of a primary bicycle and an
  auxiliary wheel, which are connected by a
  flexible quadrangular articulation mechanism.

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• When a regular bicycle turns, by inclination of
  the drivers body and the bicycle body, the
  reversed moment can be created to reduce the
  centrifugal moment which may cause the bicycle to
  overturn outwards. As to ?Dual Riding and Driving
  Tricycle?, it has the same motion form of a
  regular bicycle, and enables the parallel
  movement of two human bodies, primary bicycle and
  auxiliary wheel. Therefore, when it turns or
  moves on rough and uneven surface, it can still
  keep moving stably and at a limited inclination
  angle, but will not overturn. In addition to its
  strong structure, the bicycle body can be
  dismantled and assembled rapidly.

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Bicycle permitting operation by two people.
Before Now
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Dual Riding and Driving Tricycle
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Top-View Drawing
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Auxiliary Bicycle
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Auxiliary Bicycle and Articulation Mechanism
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A Finished Product
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• ?Dual Riding and Driving Tricycle? has a set of
  coupling bars. Four rows of perpendicularly-arrang
  ed springs lined between the bars. Therefore, the
  bicycle can lean with the principal bicycle and
  auxiliary wheel paralleled within a limited range
  to prevent overturn. Springs are interlaced
  between ends of joint configuration, which can
  resist deformation and therefore maintain the
  stability of both principal bicycle and auxiliary
  wheel bodies. Utilizing quantity discrepancy of
  these four rows of springs and the location of
  hook holes to change pulling force and therefore
  make the auxiliary wheel post remain level when
  its motionless instead of leaning forward or
  backward.

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• The auxiliary wheel body comprises two fixing
  bases, an active gear, a passive gear and an
  idler box, the auxiliary wheel further comprises
  a rung, the fixing bases are connected to both
  sides of the shaft of the auxiliary wheel, the
  active gear is a fixed gear, the passive gear is
  a movable gear, a small idler of the idler
  assembly engages with the active gear, a big
  idler of the idler assembly engages with the
  passive gear, the big idler drives the passive
  gear, and the passive gear drives the rung to
  rotate the auxiliary wheel.

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

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• Springs are interlaced between ends of joint
  configuration, which can resist deformation and
  therefore maintain the stability of both
  principal and auxiliary bicycle bodies. Utilizing
  quantity discrepancy of these four rows of
  springs and the location of hook holes to change
  pulling force and therefore make the auxiliary
  seat post remain level when its motionless
  instead of leaning forward or backward.

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When this tricycle is turning, for instance,
turning right, it shall be like that shown in the
left exhibition. The principal and auxiliary
bicycle bodies encounter height discrepancy or
are operated on uneven ground.
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Advantages

• High driving safety
• Quickly to install
• Can be mounted on nearly all bikes
• Beside you instead of behind you
• Thank You!

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