WO2003008261A1 - Human powered vehicle with up-down-moving footplate - Google Patents

Human powered vehicle with up-down-moving footplate Download PDF

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Publication number
WO2003008261A1
WO2003008261A1 PCT/KR2002/001362 KR0201362W WO03008261A1 WO 2003008261 A1 WO2003008261 A1 WO 2003008261A1 KR 0201362 W KR0201362 W KR 0201362W WO 03008261 A1 WO03008261 A1 WO 03008261A1
Authority
WO
WIPO (PCT)
Prior art keywords
gear
tooth portion
driving
pedal
engaging
Prior art date
Application number
PCT/KR2002/001362
Other languages
French (fr)
Inventor
Woonha Baek
Original Assignee
Woonha Baek
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
Priority claimed from KR2020010021850U external-priority patent/KR200263371Y1/en
Priority claimed from KR2020010021851U external-priority patent/KR200263372Y1/en
Priority claimed from KR1020020042220A external-priority patent/KR20030009205A/en
Application filed by Woonha Baek filed Critical Woonha Baek
Publication of WO2003008261A1 publication Critical patent/WO2003008261A1/en

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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
    • B62M1/00—Rider propulsion of wheeled vehicles
    • B62M1/24—Rider propulsion of wheeled vehicles with reciprocating levers, e.g. foot levers
    • B62M1/30—Rider propulsion of wheeled vehicles with reciprocating levers, e.g. foot levers characterised by the use of intermediate gears
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K3/00—Bicycles
    • B62K3/002—Bicycles without a seat, i.e. the rider operating the vehicle in a standing position, e.g. non-motorized scooters; non-motorized scooters with skis or runners

Definitions

  • the present invention relates to a human powered vehicle with up-down moving footplates, and more particularly, to a human powered vehicle capable of converting up-down movement of the footplates into revolutionary movement of the wheels thereof.
  • a bicycle In general, a bicycle is a vehicle that can be driven by the rotary movement of pedals. When a driver rotates the pedals, the bicycle moves forward accordingly. Yet, somewhat different type of vehicle so-called “kick board” is popular particularly among children.
  • the kick board is similar in that driving force is originated by human, but different in that one foot of the rider is put on the board while the other foot kicks off the ground to drive the vehicle.
  • the bicycle utilizes rotation of both feet while the kick board utilizes kick actions against the ground as the driving force.
  • Korean Utility Model Registration No. 20-236,239 discloses an example of a kick board that utilizes an up- down movement of the foot as the driving force, which has been filed on March 13, 2001 and registered on June 13, 2001.
  • the detailed description with respect to this kick board will now be described hereinafter by reference to Fig. 1 and Fig. 2 which are the attached drawings of the registered Utility Model as well as the part of the attached drawings of this specification.
  • the kick board according the Utility Model comprises a long-narrow board 2 for putting rider's one foot thereon, a steering handle 8 for steering, a front wheel 4 assembled to the front portion of the board 2 and a rear wheel 6 assembled to the rear portion of the board 2.
  • the kick board further comprises a pedal 12, mounted on about middle portion of the board 2, for putting rider's foot thereon and making an up-down movement, a driving force converter 18, 20 for converting the up-down movement of the pedal 12 into a rotary movement, a power transmission assembly 16, connecting the driving force converter 18, 20 and rear wheel 6, for transmitting the rotary power from the driving force converter 18, 20 to the rear wheel 6.
  • the pedal 12 is jointly connected to the upper face of the board 2, supported and sustained by a spring 14, and is movable up and down by footing movement of the rider.
  • the driving force converter 18, 20 converts the up-down movement of the pedal 12 into rotary movement of the wheels.
  • the driving force converter 18, 20 includes a rack gear 18 mounted on the back face of the board and a pinion gear 20 connected to both the rack gear 18 and the driving force converter 16.
  • the pinion gear 20 includes a one-way clutch (not shown) for transmitting the driving force to the power transmission assembly 16, " and at the same time, for preventing the driving force transmission of the power transmission assembly 16 to the pedal 12.
  • the power transmission assembly 16 connects a plurality of gears 17 in order to amplify the rotary speed of the pinion gear 20 and transmit the amplified power to the rear wheel 6.
  • Each gear 17 has a rotary axis perpendicular to the face of the board 8.
  • the rotary axes of the pinion gear 20 and the rear wheel 6 are parallel to the face of the board 8.
  • the rotary axes of the gears 17 and the rotary axes of the pinion gear 20 and the rear wheel 6 are disposed perpendicular to each other, and therefore, pulleys 24 and belts 26 are used in order to transmit power via these components .
  • the rotary power of the pinion gear 20 in turn is transmitted to the power transmission assembly 16 via the pulleys 24 and the belts 26 and finally to the rear wheel 6.
  • the power transmission assembly 16 amplifies the rotary speed of the pinion gear 20 before transmitting the rotary speed to the rear wheel 6, and consequently, the rear wheel 6 can rotate with very high rotary speed even though the rider slowly steps down the pedal 12. Since the clutch is attached to the pinion gear 20, the driving force originated from the pedal 12 is transmitted to the power transmission assembly 16 via the pinion gear 20 while the power from the power transmission assembly 16 cannot be transmitted toward the pedal 12. When the rider steps back off the pedal 12 after once fully stepping down the pedal 12, the pedal 12 returns back to an upper position. Therefore, the rider has only to step down the pedal since the returning of the pedal 12 is made automatically by the one-way clutch.
  • the rider does not have to kick against the ground, instead, has only to step down the pedal 12, which is very convenient for the rider.
  • the rotary speed can be amplified by using the power transmission assembly 16, and accordingly, the kick board can acquire high speed.
  • the gears of the power transmission assembly 16 are mounted parallel to the ground though the rotary axes of the gears are perpendicular to the ground. This make-up of the gears helps the power transmission assembly 16 to be rather thinner, which in turn makes the height of the board 2 lower.
  • the kick board according to this prior art has some disadvantages and drawbacks .
  • the rack gear 18 cannot be designed long enough to achieve large power. In other words, the length of the rack gear 18 is too short to generate large power per one step-down of the pedal 12.
  • the rider should continuously use one foot to drive the kick board while the other foot stays put on the board 2, which is neither symmetrical nor stable. Therefore, the rider undergoes difficulty in especially long-time driving.
  • the angle of the sole of the foot is not horizontal but constitutes angle with respect to the ground, and the driver repeatedly moves one foot between the angle and the horizontal position, which gives enormous load to the foot.
  • an object of the present invention to provide a human powered vehicle capable of converting up- down movement of the footplates into revolutionary movement of the wheels thereof, wherein both the feet are used symmetrically and each foot keeps always horizontal to the ground.
  • a power transmission apparatus comprising: a pedal 42 for putting a foot of a rider thereon and moving up and down according to an up-and-down movement of the foot; a driving bar 40, one end thereof being connected to the pedal 42; a first sector gear 71, bonded to the other end of the driving bar 40, having an axis aperture 77 at a driving bar side, having a first tooth portion at an axis aperture side and a second tooth portion at the other side, for converting an up-down movement of the pedal into a rotary movement; a first cylindrical gear engaging with the first tooth portion 73 of the first sector gear; a second cylindrical gear 80 engaging with the first cylindrical gear; a second sector gear 72, having the same shape and same rotary axis with the first sector gear 71, engaging with the second cylindrical gear 80 at the first tooth portion 74; a first spur gear 87 engaging with the first sector gear 71 at the second tooth portion 75, for making uni-directional rotation; and a
  • a kick board driven by up-down movement of the human feet comprising: a pedal 42 for putting a foot of a rider thereon and moving up and down according to an up- and-down movement of the foot; a driving bar 40, one end thereof being connected to the pedal 42; a first sector gear 71, bonded to the other end of the driving bar 40, having an axis aperture 77 at a driving bar side, having a first tooth portion at an axis aperture side and a second tooth portion at the other side, for converting an up-down movement of the pedal into a rotary movement; a first cylindrical gear engaging with the first tooth portion 73 of the first sector gear; a second cylindrical gear 80 engaging with the first cylindrical gear; a second sector gear 72, having the same shape and same rotary axis with the first sector gear 71, engaging with the second cylindrical gear 80 at the first tooth portion 74; a first spur gear 87 engaging with the first sector gear 71 at the second tooth portion 75, for making
  • a bicycle driven by up-down movement of the human feet comprising: a pedal 42 for putting a foot of a rider thereon and moving up and down according to an up-and-down movement of the foot; a driving bar 40, one end thereof being connected to the pedal 42; a first sector gear 71, bonded to the other end of the driving bar 40, having an axis aperture 77 at a driving bar side, having a first tooth portion at an axis aperture side and a second tooth portion at the other side, for converting an up-down movement of the pedal into a rotary movement; a first cylindrical gear engaging with the first tooth portion 73 of the first sector gear; a second cylindrical gear 80 engaging with the first cylindrical gear; a second sector gear 72, having the same shape and same rotary axis with the first sector gear 71, engaging with the second cylindrical gear 80 at the first tooth portion 74; a first spur gear 87 engaging with the first sector gear 71 at the second tooth portion 75, for making
  • Figs . 1 and 2 present a kick board according to a prior art
  • Figs. 3 and 4 illustrates a perspective view of the inventive up-down-movement driven bicycle
  • Fig. 5 shows in detail the pedal- bars 38, 40 and the pedal 42;
  • Fig. 6 illustrates a schematic view describing a principle that the pedal 42 keeps horizontal
  • Fig. 7 provides an exploded view of the drive assembly
  • Fig. 8 is a plane view of the drive assembly.
  • FIG. 3 and 4 illustrates a perspective view of the inventive up-down-movement driven bicycle.
  • the up-down-movement driven bicycle in accordance with the first preferred embodiment of the present invention includes a steering handle 32, a steering tube 34, a front and a rear wheels 44 and 46, a pedal 42 and a pair of drive assembly covers 36.
  • each of the drive assembly covers 36 is installed at each of the left and right side, respectively.
  • a pair of pedal bars 38 and 40 are connected by using a brocket 66 by means of e.g., bolts.
  • the other end of the pair of the pedal bars 38 is connected to -a pedal 42.
  • the up-down-movement driven bicycle in accordance with the second preferred embodiment includes a seat 58, a seat supporter 52, 54, 56 and a supporting pedestal 60, all serving for the driver's sitting on the seat 58.
  • the second preferred embodiment is superior to the first preferred embodiment in that the rider can drive while sitting on the seat 58 rather than standing, and thus, can drive for a long-time with less fatigue.
  • the operating principles of the two are identical.
  • Fig. 5 shows in detail the pedal bars 38, 40 and the pedal 42.
  • the pedal bars include a horizontal auxiliary bar 38 installed at upper side and a driving bar 40 installed at lower side.
  • the horizontal auxiliary bar 38 serves to help the pedal 42 to keep always horizontal and the driving bar 40 transmits power originated by the up-down movement of the pedal 42.
  • Common one end of the horizontal auxiliary bar 38 and the driving bar 40 is rotatably connected to the side of the drive assembly cover 36 by means of, e.g., bolts.
  • the other common end of the horizontal auxiliary bar 38 and the driving bar 40 is rotatably connected to the vertical bar 64 that is connected to the pedal 42.
  • Fig. 6 illustrates a schematic view describing a principle that the pedal 42 keeps horizontal.
  • Fig. 7 provides an exploded view of the drive assembly and Fig. 8 is a plane view thereof.
  • the drive assembly in accordance with the present invention includes a pair of pedals 42, a pair of driving bars 40, a pair of bosses 69 and 70, a pair of sector gears 71 and 72, a sector gear supporting pin 85, a pair of cylindrical gear supporting spindles 83 and 84, a pair of cylindrical gears 79 and 80, a pair of spur gears 87 and 88, a driving sprocket 91, an idler sprocket 92, a driving sprocket shaft 99 and a chain 86.
  • a first pedal 42 is bonded to one end of a first • driving bar 40.
  • a first boss 69 is bonded to the other end of the first driving bar 40.
  • a second pedal 43 is bonded to one end of a second driving bar 41.
  • a sec nd boss 69 is bonded to the other end of the second driving bar 40.
  • the first boss 69 is bonded to a first sector gear 71 and the second boss 70 is bonded to a second sector gear 72. At the center of a first tooth portion of each of the first sector gear 71 and the second sector gear 72, an axis aperture 77 and 78 is formed.
  • the first boss 69, the axis aperture 77 of the first sector gear, the axis aperture 78 of the second sector gear 72 and the second boss 70 are disposed on the same imaginary straight line.
  • the sector gear supporting pin 85 is_ not bonded with any other element or portion.
  • the teeth of the first tooth portion 73 and 74 of the first and the second sector gears 71 and 72 are engaged with the teeth of the first cylindrical gear 79 and the second cylindrical gear 80, respectively.
  • the first cylindrical gear 79 and the second cylindrical gear 80 are engaged with each other.
  • the first cylindrical gear supporting spindle 83 and the second cylindrical gear supporting spindle 84 are inserted to thereby properly situate the first cylindrical gear 79 and the second cylindrical gear 80.
  • the first and the second cylindrical gears 79 and 80 rotate supported by the cylindrical gear spindles 83 and 84.
  • first sector gear 71 and the second sector gear 72, the first cylindrical gear 79 and the second cylindrical gear 80 are as shown in Fig. 7. Seen with a side view, emphasized with the dotted circle, the first cylindrical gear 79 and the second cylindrical gear 80, the first cylindrical gear 79 and the second cylindrical gear 80 are not disposed at the same place but disposed and engaged with different slope spots of the tooth portions 73 and 74 of the first and the second sector gears 71 and 72. These arrangements enable the first and the second sector gears 71 and 72 and the first and the second cylindrical gears 79 and 80 to operate properly.
  • the teeth of the second tooth portions 75 and 76 of the first and the second sector gears 71 and 72 are engaged with the tooth portions of the first and the second spur gears 87 and 88.
  • At the center of each spur gear 87 and 88 there is formed a toothed aperture 89 and 90.
  • a driving sprocket shaft 99 is penetrated through the toothed apertures 89 and 90.
  • the toothed apertures 89 and 90 of the * spur gears 87 and 88, a center aperture 93 of the driving sprocket 91, and the driving sprocket shaft 99 are disposed at the same imaginary straight line.
  • a key insert groove 97 is formed on the outer circumference of the driving sprocket shaft 99.
  • the key insert groove 97 serves to insert an engagement key 98 for engaging the driving sprocket shaft 99 to with the driving sprocket 91.
  • ratchet pin holes 95 and 96 serving to accommodate ratchet pins 47.
  • the center aperture 93 formed at the center of the driving sprocket 91 is not a full circle but has a rectangular-shaped dent 94 on a part thereof. In the space formed by this dent 94 and the key insert groove 97, the engagement key 98 is inserted to thereby serve to engage the driving sprocket 91 and the driving sprocket shaft 99.
  • first and the second spur gears 87 and 88 On the outer circumferences of the first and the second spur gears 87 and 88, there are formed teeth to be exactly engaged with the teeth of the first and the second sector gears 71 and 72.
  • the toothed apertures 89 and 90 On the inner circumferences of the first and the second spur gears 87 and 88 there are formed the toothed apertures 89 and 90.
  • the toothed apertures 89 and 90 have ratchet gears having slanted teeth that enable the spur gears 87 and 88 to make uni-directional rotation, that is, they transmit rotary motion from the driving sprocket shaft 99 in one direction, but slip in the other rotational direction.
  • Fig. 9 describes in detail part of the ratchet gears 89 and 90 installed on the inner circumference of each of the first and the second spur gears 87 and 88.
  • a ratchet pin 47 and a spring 48 are mounted at each ratchet pin hole 95 and 96. If the spur gear 87 and 88 are to rotate clockwise, the driving sprocket shaft 99 does not rotate since the teeth formed on the spur gears 87 and 88 rotate while pushing out the ratchet pin 47. On the other hand, when the spur gear 87 and 88 are to rotate counterclockwise, the driving sprocket shaft 99 rotate accordingly since the teeth formed on the spur gears 87 and 88 rotate while picking up the ratchet pin 47.
  • the ratchet gears 89 and 90 make the spur gears 87 and 88 rotate uni-directionally.
  • the driving sprocket shaft 99 is inserted through the toothed apertures 89 and 90 of the first and the second spur gears 87 and 88, and the center aperture 93 of the driving sprocket.
  • the driving sprocket shaft 99 is connected to the first and the second spur gears by way of the ratchet pin 47.
  • the ratchet gears 89 and 90 of the spur gears 87 and 88, and the ratchet pin 47 of the driving sprocket shaft 99 serve to make uni-directional rotation of the driving sprocket shaft 99.
  • the uni-direction matches a direction that the inventive up-down-movement driven bicycle moves forward.
  • the driving sprocket 91 makes the ' idler sprocket 92 rotate by way of the chain 86.
  • the rotation of the idler sprocket 92 means the rotation of the rear wheel 46.
  • the first sector gear 71 bonded to the first boss 69 rotates clockwise around the sector gear supporting pin 85. Accordingly, the first spur gear 87 engaged with the first sector gear 71 rotates counterclockwise around the driving sprocket shaft 99. Subsequently, the driving sprocket 91 connected to the driving sprocket shaft 99 by means of the engagement key 98, rotates counterclockwise. The rotary power of the driving sprocket is transmitted to the idler sprocket 92 via the chain 86, and finally, the rear wheel 46 rotates counterclockwise, which means th >at the inventive bicycle moves forward.
  • the first sector gear 71 rotates clockwise as the pedal 42 moves downward. Accordingly, the first cylindrical gear 79 rotates counterclockwise.
  • the second cylindrical gear 80 engaged with the first cylindrical gear 79 rotates clockwise.
  • the second sector gear 72 engaging the second cylindrical gear 80 rotates counterclockwise. That' is, the first sector gear 75 and the second sector gear 76 rotates at the same time but always in the opposite directions.
  • the counterclockwise rotation of the second sector gear 76 always induces the clockwise rotation of the second spur gear 88.
  • the first and the second cylindrical gears 79 and 80 play a key role in that a first group including the first pedal 42, the first sector gear 71 and the first spur gear and a second group including the second pedal 43, the second sector- gear 72 and the second spur gear 88 operate reciprocally or complementarily to each other. For instance, if elements in the first group rotate clockwise, elements in the second group rotates counterclockwise and vice versa.
  • first pedal 42 and the second pedal 43 always operate reciprocally to each other. That is, when the first pedal 42 moves upward, the second pedal 43 moves downward, and when the first pedal 42 moves downward, the second pedal 43 moves upward. This means that the rider could and should step each foot alternately. Therefore, it cannot be that the rider's both feet moves downward or upward at the same time and that one foot stays put while the other foot moves.
  • the sector gear supporting pin 85, a pair of cylindrical gear supporting spindles 83 and 84 do not rotate itself but only provide a rotation axis, and therefore, both ends of them may be firmly fixed.
  • the driving sprocket shaft 99 rotates itself, and therefore, it should be noted that both the ends of it may be supported by such as bearings though not shown in the attached drawings .
  • ratchet gears 89 and 90 on the spur gears 87 and 88 are illustrated in Fig. 7 as formed on the inner circumference thereof, they could be formed on the outer circumference thereof. In this case, however, the connections of the inner circumference of the spur gears 87 and 88 and the driving sprocket shaft 99 should not be connections by means of a ratchet but a bonded connections . Therefore, in the ratchet pin holes 95 and 96 of the driving sprocket shaft 99, not the ratchet pin 47 and the spring 48 are inserted but a key having same function as the engagement key 98 should be inserted.
  • the up-down-move dnt driven bicycle is illustrated and described as driving the rear wheel 46, it may drive the front wheel 44 with the similar driving mechanism described. Referring to Fig. 7 and Fig. 8, the driving sprocket
  • idler sprocket 92 and the chain 86 are illustrated as being disposed in the lower portion of the drawings, they may be disposed in the upper portion of the drawings or disposed between the first spur gear 87 and the second spur gear 88.
  • the driver can drive the vehicle with motions as if the rider walks on the level ground, and therefore, the vehicle is useful not only for a means of -transportation but a means of exercise.
  • the inventive vehicle utilizes human power as the driving force and the driving mechanism is rather simple, it can be manufactured at a reasonably low cost.
  • the vehicle in accordance with the present invention is versatile since it can easily be converted from a standing-type into a seat-type or vice versa without significant change in the driving mechanism.

Abstract

The present invention relates to a human powered vehicle with up-down moving footplates. The invention power transmission apparatus comprises a pedal (42), a driving bar (40), a first sector gear (71), a first cylindrical gear, a second cylindrical gear, a second sector gear (72), a first spur gear (87) and a second spur gear (88).

Description

Human Powered Vehicle with Up-Down-Moving Footplate
Technical Field
The present invention relates to a human powered vehicle with up-down moving footplates, and more particularly, to a human powered vehicle capable of converting up-down movement of the footplates into revolutionary movement of the wheels thereof.
Background Art
In general, a bicycle is a vehicle that can be driven by the rotary movement of pedals. When a driver rotates the pedals, the bicycle moves forward accordingly. Yet, somewhat different type of vehicle so-called "kick board" is popular particularly among children. The kick board is similar in that driving force is originated by human, but different in that one foot of the rider is put on the board while the other foot kicks off the ground to drive the vehicle.
In other words, the bicycle utilizes rotation of both feet while the kick board utilizes kick actions against the ground as the driving force.
Korean Utility Model Registration No. 20-236,239 discloses an example of a kick board that utilizes an up- down movement of the foot as the driving force, which has been filed on March 13, 2001 and registered on June 13, 2001. The detailed description with respect to this kick board will now be described hereinafter by reference to Fig. 1 and Fig. 2 which are the attached drawings of the registered Utility Model as well as the part of the attached drawings of this specification.
The kick board according the Utility Model comprises a long-narrow board 2 for putting rider's one foot thereon, a steering handle 8 for steering, a front wheel 4 assembled to the front portion of the board 2 and a rear wheel 6 assembled to the rear portion of the board 2.
In addition to these, the kick board further comprises a pedal 12, mounted on about middle portion of the board 2, for putting rider's foot thereon and making an up-down movement, a driving force converter 18, 20 for converting the up-down movement of the pedal 12 into a rotary movement, a power transmission assembly 16, connecting the driving force converter 18, 20 and rear wheel 6, for transmitting the rotary power from the driving force converter 18, 20 to the rear wheel 6.
The pedal 12 is jointly connected to the upper face of the board 2, supported and sustained by a spring 14, and is movable up and down by footing movement of the rider. The driving force converter 18, 20 converts the up-down movement of the pedal 12 into rotary movement of the wheels. The driving force converter 18, 20 includes a rack gear 18 mounted on the back face of the board and a pinion gear 20 connected to both the rack gear 18 and the driving force converter 16. The pinion gear 20 includes a one-way clutch (not shown) for transmitting the driving force to the power transmission assembly 16, " and at the same time, for preventing the driving force transmission of the power transmission assembly 16 to the pedal 12.
The power transmission assembly 16 connects a plurality of gears 17 in order to amplify the rotary speed of the pinion gear 20 and transmit the amplified power to the rear wheel 6. Each gear 17 has a rotary axis perpendicular to the face of the board 8. On the other hand, the rotary axes of the pinion gear 20 and the rear wheel 6 are parallel to the face of the board 8. The rotary axes of the gears 17 and the rotary axes of the pinion gear 20 and the rear wheel 6 are disposed perpendicular to each other, and therefore, pulleys 24 and belts 26 are used in order to transmit power via these components . When the rider steps down the pedal 12, the rack gear connected to the pedal 12 makes the pinion gear 20 rotate. The rotary power of the pinion gear 20 in turn is transmitted to the power transmission assembly 16 via the pulleys 24 and the belts 26 and finally to the rear wheel 6. The power transmission assembly 16 amplifies the rotary speed of the pinion gear 20 before transmitting the rotary speed to the rear wheel 6, and consequently, the rear wheel 6 can rotate with very high rotary speed even though the rider slowly steps down the pedal 12. Since the clutch is attached to the pinion gear 20, the driving force originated from the pedal 12 is transmitted to the power transmission assembly 16 via the pinion gear 20 while the power from the power transmission assembly 16 cannot be transmitted toward the pedal 12. When the rider steps back off the pedal 12 after once fully stepping down the pedal 12, the pedal 12 returns back to an upper position. Therefore, the rider has only to step down the pedal since the returning of the pedal 12 is made automatically by the one-way clutch.
According to the kick board as described above, the rider does not have to kick against the ground, instead, has only to step down the pedal 12, which is very convenient for the rider. In addition, the rotary speed can be amplified by using the power transmission assembly 16, and accordingly, the kick board can acquire high speed. Moreover, the gears of the power transmission assembly 16 are mounted parallel to the ground though the rotary axes of the gears are perpendicular to the ground. This make-up of the gears helps the power transmission assembly 16 to be rather thinner, which in turn makes the height of the board 2 lower.
The kick board according to this prior art, however, has some disadvantages and drawbacks . First, due to the narrow separation between the board
2 and the ground, the rack gear 18 cannot be designed long enough to achieve large power. In other words, the length of the rack gear 18 is too short to generate large power per one step-down of the pedal 12.
Meanwhile, with regard to the driving operation aspect, the rider should continuously use one foot to drive the kick board while the other foot stays put on the board 2, which is neither symmetrical nor stable. Therefore, the rider undergoes difficulty in especially long-time driving.
Moreover, when putting one foot on the pedal, the angle of the sole of the foot is not horizontal but constitutes angle with respect to the ground, and the driver repeatedly moves one foot between the angle and the horizontal position, which gives enormous load to the foot.
Disclosure of Invention
It is, therefore, an object of the present invention to provide a human powered vehicle capable of converting up- down movement of the footplates into revolutionary movement of the wheels thereof, wherein both the feet are used symmetrically and each foot keeps always horizontal to the ground.
According to one aspect of the present invention, there is provided a power transmission apparatus, comprising: a pedal 42 for putting a foot of a rider thereon and moving up and down according to an up-and-down movement of the foot; a driving bar 40, one end thereof being connected to the pedal 42; a first sector gear 71, bonded to the other end of the driving bar 40, having an axis aperture 77 at a driving bar side, having a first tooth portion at an axis aperture side and a second tooth portion at the other side, for converting an up-down movement of the pedal into a rotary movement; a first cylindrical gear engaging with the first tooth portion 73 of the first sector gear; a second cylindrical gear 80 engaging with the first cylindrical gear; a second sector gear 72, having the same shape and same rotary axis with the first sector gear 71, engaging with the second cylindrical gear 80 at the first tooth portion 74; a first spur gear 87 engaging with the first sector gear 71 at the second tooth portion 75, for making uni-directional rotation; and a second spur gear 88 engaging with the second sector gear 72 at the second tooth portion 76, for making uni-directional rotation.
According to another aspect of the present invention, there is provided a kick board driven by up-down movement of the human feet, comprising: a pedal 42 for putting a foot of a rider thereon and moving up and down according to an up- and-down movement of the foot; a driving bar 40, one end thereof being connected to the pedal 42; a first sector gear 71, bonded to the other end of the driving bar 40, having an axis aperture 77 at a driving bar side, having a first tooth portion at an axis aperture side and a second tooth portion at the other side, for converting an up-down movement of the pedal into a rotary movement; a first cylindrical gear engaging with the first tooth portion 73 of the first sector gear; a second cylindrical gear 80 engaging with the first cylindrical gear; a second sector gear 72, having the same shape and same rotary axis with the first sector gear 71, engaging with the second cylindrical gear 80 at the first tooth portion 74; a first spur gear 87 engaging with the first sector gear 71 at the second tooth portion 75, for making uni-directional rotation; a second spur gear 88 engaging with the second sector gear 72 at the second tooth portion 76, for making uni-directional rotation; a driving sprocket 91 for rotating according to a uni-directional rotation of the first spur gear 87 and the second spur gear 88; an idler sprocket 92 engaged with the driving sprocket 91 by means of a chain 86; a rear wheel 46, connected to the idler sprocket, for rotating according to the rotation of the idler sprocket; and a steering handle 32, connected to a front wheel of the kick board, for steering a direction.
According to yet another aspect of the present invention, there is provided a bicycle driven by up-down movement of the human feet, comprising: a pedal 42 for putting a foot of a rider thereon and moving up and down according to an up-and-down movement of the foot; a driving bar 40, one end thereof being connected to the pedal 42; a first sector gear 71, bonded to the other end of the driving bar 40, having an axis aperture 77 at a driving bar side, having a first tooth portion at an axis aperture side and a second tooth portion at the other side, for converting an up-down movement of the pedal into a rotary movement; a first cylindrical gear engaging with the first tooth portion 73 of the first sector gear; a second cylindrical gear 80 engaging with the first cylindrical gear; a second sector gear 72, having the same shape and same rotary axis with the first sector gear 71, engaging with the second cylindrical gear 80 at the first tooth portion 74; a first spur gear 87 engaging with the first sector gear 71 at the second tooth portion 75, for making uni-directional rotation; a second spur gear 88 engaging with the second sector gear 72 at the second tooth portion 76, for making uni-directional rotation; a driving sprocket 91 for rotating according to a uni-directional rotation of the first spur gear 87 and the second spur gear 88; an idler sprocket 92 engaged with the driving sprocket 91 by means of a chain 86; a rear wheel 46, connected to the idler sprocket, for rotating according to the rotation of the idler sprocket; a steering handle 32, connected to a front wheel of the kick board, for steering a direction; and a seat, connected to part of the bicycle, for cradling a driver's hips.
Brief Description of Drawings
The above and other objects and features of the present invention will become apparent from the following description of preferred embodiment given in connection with the accompanying drawings, in which:
Figs . 1 and 2 present a kick board according to a prior art;
Figs. 3 and 4 illustrates a perspective view of the inventive up-down-movement driven bicycle;
Fig. 5 shows in detail the pedal- bars 38, 40 and the pedal 42;
Fig. 6 illustrates a schematic view describing a principle that the pedal 42 keeps horizontal; Fig. 7 provides an exploded view of the drive assembly; and
Fig. 8 is a plane view of the drive assembly.
Best Mode for Carrying Out the Invention
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings . Figs. 3 and 4 illustrates a perspective view of the inventive up-down-movement driven bicycle.
The up-down-movement driven bicycle in accordance with the first preferred embodiment of the present invention includes a steering handle 32, a steering tube 34, a front and a rear wheels 44 and 46, a pedal 42 and a pair of drive assembly covers 36. Among these, though not shown in the figures, each of the drive assembly covers 36 is installed at each of the left and right side, respectively. At outer side of each drive assembly cover 36, a pair of pedal bars 38 and 40 are connected by using a brocket 66 by means of e.g., bolts. The other end of the pair of the pedal bars 38 is connected to -a pedal 42.
The up-down-movement driven bicycle in accordance with the second preferred embodiment, as shown in Fig. 4, includes a seat 58, a seat supporter 52, 54, 56 and a supporting pedestal 60, all serving for the driver's sitting on the seat 58. The second preferred embodiment is superior to the first preferred embodiment in that the rider can drive while sitting on the seat 58 rather than standing, and thus, can drive for a long-time with less fatigue. The operating principles of the two, however, are identical.
Fig. 5 shows in detail the pedal bars 38, 40 and the pedal 42. The pedal bars include a horizontal auxiliary bar 38 installed at upper side and a driving bar 40 installed at lower side. The horizontal auxiliary bar 38 serves to help the pedal 42 to keep always horizontal and the driving bar 40 transmits power originated by the up-down movement of the pedal 42. Common one end of the horizontal auxiliary bar 38 and the driving bar 40 is rotatably connected to the side of the drive assembly cover 36 by means of, e.g., bolts. On the other hand, the other common end of the horizontal auxiliary bar 38 and the driving bar 40 is rotatably connected to the vertical bar 64 that is connected to the pedal 42. Fig. 6 illustrates a schematic view describing a principle that the pedal 42 keeps horizontal. It is obvious that, as long as the vertical bar 64 keeps perpendicular to the ground and whether the pedal 42 and the pedal bar 38, 40 are situated at upper side (solid line) or situated at lower side (dotted line), the parallelograms shown in Fig. 6 are maintained. Therefore, the pedal 42, as long as the vertical bar 64 keeps perpendicular to the pedal 42, keeps parallel relative to the ground. It may be noted that the pedal bar 38, 40 rotates around its axis, the trajectory of the pedal 42 is not exactly straight line but rather an arc. Therefore, when the horizontal auxiliary bar 38 and the driving bar 40 are made connected to the vertical bar 64, there should be considered some margin according to the slight arced movement .
The fact that the pedal 42 maintains horizontal attitude at any time at any circumstances allows the rider to feel comfortable in driving as well as feel less fatigue in spite of long-time ride. Fig. 7 provides an exploded view of the drive assembly and Fig. 8 is a plane view thereof.
The drive assembly in accordance with the present invention includes a pair of pedals 42, a pair of driving bars 40, a pair of bosses 69 and 70, a pair of sector gears 71 and 72, a sector gear supporting pin 85, a pair of cylindrical gear supporting spindles 83 and 84, a pair of cylindrical gears 79 and 80, a pair of spur gears 87 and 88, a driving sprocket 91, an idler sprocket 92, a driving sprocket shaft 99 and a chain 86.
A first pedal 42 is bonded to one end of a first • driving bar 40. A first boss 69 is bonded to the other end of the first driving bar 40. A second pedal 43 is bonded to one end of a second driving bar 41. A sec nd boss 69 is bonded to the other end of the second driving bar 40. The first boss 69 is bonded to a first sector gear 71 and the second boss 70 is bonded to a second sector gear 72. At the center of a first tooth portion of each of the first sector gear 71 and the second sector gear 72, an axis aperture 77 and 78 is formed. The first boss 69, the axis aperture 77 of the first sector gear, the axis aperture 78 of the second sector gear 72 and the second boss 70 are disposed on the same imaginary straight line. The sector gear supporting pin 85 is_ not bonded with any other element or portion.
The teeth of the first tooth portion 73 and 74 of the first and the second sector gears 71 and 72 are engaged with the teeth of the first cylindrical gear 79 and the second cylindrical gear 80, respectively. At the same time, the first cylindrical gear 79 and the second cylindrical gear 80 are engaged with each other. There are formed a spindle hole 81 and 82 at the center of each of the first cylindrical gear 79 and the second cylindrical gear 80. Through the spindle hole, the first cylindrical gear supporting spindle 83 and the second cylindrical gear supporting spindle 84 are inserted to thereby properly situate the first cylindrical gear 79 and the second cylindrical gear 80. The first and the second cylindrical gears 79 and 80 rotate supported by the cylindrical gear spindles 83 and 84. When the first sector gear 71 rotates, the first cylindrical gear 79 rotates accordingly, and at the same time, the second cylindrical gear 80 * that is engaged with the first* cylindrical gear 79 rotates accordingly in the counter- direction of the first cylindrical gear 79.
Relative arrangements of the first sector gear 71 and the second sector gear 72, the first cylindrical gear 79 and the second cylindrical gear 80 are as shown in Fig. 7. Seen with a side view, emphasized with the dotted circle, the first cylindrical gear 79 and the second cylindrical gear 80, the first cylindrical gear 79 and the second cylindrical gear 80 are not disposed at the same place but disposed and engaged with different slope spots of the tooth portions 73 and 74 of the first and the second sector gears 71 and 72. These arrangements enable the first and the second sector gears 71 and 72 and the first and the second cylindrical gears 79 and 80 to operate properly. But it should be noted that if the sizes of the tooth portions 73 and 74 of the first sector gear 71 and the second sector gear 72 are different or if the sizes of the first cylindrical gear 79 and the second cylindrical gear 80 are different, there is no need for these arrangements to be as described above.
The teeth of the second tooth portions 75 and 76 of the first and the second sector gears 71 and 72 are engaged with the tooth portions of the first and the second spur gears 87 and 88. At the center of each spur gear 87 and 88, there is formed a toothed aperture 89 and 90. A driving sprocket shaft 99 is penetrated through the toothed apertures 89 and 90. The toothed apertures 89 and 90 of the * spur gears 87 and 88, a center aperture 93 of the driving sprocket 91, and the driving sprocket shaft 99 are disposed at the same imaginary straight line. A key insert groove 97 is formed on the outer circumference of the driving sprocket shaft 99. The key insert groove 97 serves to insert an engagement key 98 for engaging the driving sprocket shaft 99 to with the driving sprocket 91. At positions on the outer circumference of the driving sprocket shaft 99 where the first and the second spur gears are connected, there are formed ratchet pin holes 95 and 96 serving to accommodate ratchet pins 47. The center aperture 93 formed at the center of the driving sprocket 91 is not a full circle but has a rectangular-shaped dent 94 on a part thereof. In the space formed by this dent 94 and the key insert groove 97, the engagement key 98 is inserted to thereby serve to engage the driving sprocket 91 and the driving sprocket shaft 99.
On the outer circumferences of the first and the second spur gears 87 and 88, there are formed teeth to be exactly engaged with the teeth of the first and the second sector gears 71 and 72. On the other hand, on the inner circumferences of the first and the second spur gears 87 and 88 there are formed the toothed apertures 89 and 90. The toothed apertures 89 and 90 have ratchet gears having slanted teeth that enable the spur gears 87 and 88 to make uni-directional rotation, that is, they transmit rotary motion from the driving sprocket shaft 99 in one direction, but slip in the other rotational direction.
Fig. 9 describes in detail part of the ratchet gears 89 and 90 installed on the inner circumference of each of the first and the second spur gears 87 and 88. As can be seen from the figure, a ratchet pin 47 and a spring 48 are mounted at each ratchet pin hole 95 and 96. If the spur gear 87 and 88 are to rotate clockwise, the driving sprocket shaft 99 does not rotate since the teeth formed on the spur gears 87 and 88 rotate while pushing out the ratchet pin 47. On the other hand, when the spur gear 87 and 88 are to rotate counterclockwise, the driving sprocket shaft 99 rotate accordingly since the teeth formed on the spur gears 87 and 88 rotate while picking up the ratchet pin 47. Finally, the ratchet gears 89 and 90 make the spur gears 87 and 88 rotate uni-directionally. The driving sprocket shaft 99 is inserted through the toothed apertures 89 and 90 of the first and the second spur gears 87 and 88, and the center aperture 93 of the driving sprocket. The driving sprocket shaft 99 is connected to the first and the second spur gears by way of the ratchet pin 47. ' The ratchet gears 89 and 90 of the spur gears 87 and 88, and the ratchet pin 47 of the driving sprocket shaft 99 serve to make uni-directional rotation of the driving sprocket shaft 99. Herein, the uni-direction matches a direction that the inventive up-down-movement driven bicycle moves forward. The driving sprocket 91 makes the ' idler sprocket 92 rotate by way of the chain 86. Though not shown, since the idler sprocket 92 is bonded to the axis of the rear wheel 46, the rotation of the idler sprocket 92 means the rotation of the rear wheel 46.
Hereinafter, operations of the up-down-movement driven bicycle in accordance with the present invention will now be described.
When the driver steps down the first pedal 42, the first sector gear 71 bonded to the first boss 69 rotates clockwise around the sector gear supporting pin 85. Accordingly, the first spur gear 87 engaged with the first sector gear 71 rotates counterclockwise around the driving sprocket shaft 99. Subsequently, the driving sprocket 91 connected to the driving sprocket shaft 99 by means of the engagement key 98, rotates counterclockwise. The rotary power of the driving sprocket is transmitted to the idler sprocket 92 via the chain 86, and finally, the rear wheel 46 rotates counterclockwise, which means th >at the inventive bicycle moves forward.
In the meantime, the first sector gear 71 rotates clockwise as the pedal 42 moves downward. Accordingly, the first cylindrical gear 79 rotates counterclockwise. The second cylindrical gear 80 engaged with the first cylindrical gear 79 rotates clockwise. Then, the second sector gear 72 engaging the second cylindrical gear 80 rotates counterclockwise. That' is, the first sector gear 75 and the second sector gear 76 rotates at the same time but always in the opposite directions. The counterclockwise rotation of the second sector gear 76 always induces the clockwise rotation of the second spur gear 88. The clockwise rotation of the second spur gear 88, however, cannot induce the rotation of the driving sprocket shaft 99 since the ratchet gear 90 installed in the inner circumference of the second spur gear serves to allow the driving sprocket shaft 99 to make only counterclockwise rotation.
It should be noted that the operations elaborated above are illustrated as if operations take place sequentially in time for the purpose of illustration, but in fact, the operations take place at the same time.
The first and the second cylindrical gears 79 and 80 play a key role in that a first group including the first pedal 42, the first sector gear 71 and the first spur gear and a second group including the second pedal 43, the second sector- gear 72 and the second spur gear 88 operate reciprocally or complementarily to each other. For instance, if elements in the first group rotate clockwise, elements in the second group rotates counterclockwise and vice versa.
Furthermore, the first pedal 42 and the second pedal 43 always operate reciprocally to each other. That is, when the first pedal 42 moves upward, the second pedal 43 moves downward, and when the first pedal 42 moves downward, the second pedal 43 moves upward. This means that the rider could and should step each foot alternately. Therefore, it cannot be that the rider's both feet moves downward or upward at the same time and that one foot stays put while the other foot moves.
Referring to the case that the first pedal 42 movtes upward as opposite to the above description, there is no need for further description since the operations in this case are exactly reciprocal to the above description. In the description above, the sector gear supporting pin 85, a pair of cylindrical gear supporting spindles 83 and 84 do not rotate itself but only provide a rotation axis, and therefore, both ends of them may be firmly fixed. The driving sprocket shaft 99, however, rotates itself, and therefore, it should be noted that both the ends of it may be supported by such as bearings though not shown in the attached drawings .
Meanwhile, though the cross-sections of the bosses 69 and 70 are illustrated as a circle in Fig. 7, any other shape is acceptable as long as they are bonded to and rotate with the sector gears 71 and 72.
In addition, though the ratchet gears 89 and 90 on the spur gears 87 and 88 are illustrated in Fig. 7 as formed on the inner circumference thereof, they could be formed on the outer circumference thereof. In this case, however, the connections of the inner circumference of the spur gears 87 and 88 and the driving sprocket shaft 99 should not be connections by means of a ratchet but a bonded connections . Therefore, in the ratchet pin holes 95 and 96 of the driving sprocket shaft 99, not the ratchet pin 47 and the spring 48 are inserted but a key having same function as the engagement key 98 should be inserted. Although the up-down-move dnt driven bicycle is illustrated and described as driving the rear wheel 46, it may drive the front wheel 44 with the similar driving mechanism described. Referring to Fig. 7 and Fig. 8, the driving sprocket
91, idler sprocket 92 and the chain 86 are illustrated as being disposed in the lower portion of the drawings, they may be disposed in the upper portion of the drawings or disposed between the first spur gear 87 and the second spur gear 88.
While the invention has been shown and described with respect to the preferred embodiment, it will be understood by the skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims .
Industrial Applicability
As described above, since the feet of the driver always kept horizontal with respect to the ground while driving the rider does not feel difficulty or fatigue in especially long-time driving.
Meanwhile, the driver can drive the vehicle with motions as if the rider walks on the level ground, and therefore, the vehicle is useful not only for a means of -transportation but a means of exercise.
Above all, the inventive vehicle utilizes human power as the driving force and the driving mechanism is rather simple, it can be manufactured at a reasonably low cost.
In addition, the vehicle in accordance with the present invention is versatile since it can easily be converted from a standing-type into a seat-type or vice versa without significant change in the driving mechanism.

Claims

What is claimed is:
1. A power transmission apparatus, comprising: a pedal 42 for putting a foot of a rider thereon and moving up and down according to an up-and-down movement of the foot; a driving bar 40, one end thereof being connected to the pedal 42; a first sector gear 71, bonded to the other end of the driving bar 40, having an axis aperture 77 at a driving bar side, having a first tooth portion at an axis aperture side and a second tooth portion at the other side, for converting an up-down movement of the pedal into a rotary movement; a first cylindrical gear engaging with the first tooth portion 73 of the first sector gear; a second cylindrical gear 80 engaging with the first cylindrical gear; a second sector gear 72, having the same shape and same rotary axis with the first sector gear 71, engaging with the second cylindrical gear 80 at the first tooth portion 74; a first spur gear 87 engaging with the first sector gear 71 at the second tooth portion 75, for making uni- directional rotation; and a second spur gear 88 engaging with the second sector gear 72 at the second tooth portion 76, for making uni- directional rotation.
2. The power transmission apparatus of claim 1, wherein each of the first spur gear 87 and the second spur gear 88 has a toothed aperture 89 and 90, the outer circumference of the axis aperture having a ratchet form* having a plurality of slanted teeth.
3. The power transmission apparatus of claim 2, further comprising a driving sprocket shaft 99, the driving sprocket shaft 99 being inserted through axis apertures formed at the first spur gear 87 and the second spur gear 88, and ratchet pin holes 95 and 96 being formed at the axis apertures on the outer surface of the driving sprocket shaft 99 where the ratchet pins 47 are inserted.
4. The power transmission apparatus of claim 3, wherein a driving sprocket 91 is inserted through the driving sprocket shaft 99, a hole is formed at the connection portion where the driving sprocket shaft 99 is connected to the driving sprocket 91, an aperture is formed at the center of the driving sprocket 91, and an engagement key 98 is inserted in the holes to serve to connect the driving sprocket shaft 99 and the driving sprocket 91.
5. The power transmission apparatus of claim 4, further comprising an idler sprocket 92 connected to the driving sprocket 91 via a chain 86.
6. The power transmission apparatus of claim 5, further comprising a rear wheel 46, connected to the idler sprocket 92 with the same axis, for rotating according to the rotation of the *idler sprocket. *
7. The power transmission apparatus of claim 1, further comprising a horizontal auxiliary bar 38 mounted at upper side of a driving bar 40 in parallel with the driving bar, wherein the horizontal auxiliary bar 38 serves to keep horizontal with respect to the ground.
8. A kick board driven by up-down movement of the human feet, comprising: a pedal 42 for putting a foot of a rider thereon and moving up and down according to an up-and-down movement of the foot; a driving bar 40, one end thereof being connected to the pedal 42; a first sector gear 71, bonded to the other end of the driving bar 40, having an axis aperture 77 at a driving bar side, having a first tooth portion at an axis aperture side and a second tooth portion at the other side, for converting an up-down movement of the pedal into a rotary movement; a first cylindrical gear engaging with the first tooth portion 73 of the first sector gear; a second cylindrical gear 80 engaging with the first cylindrical gear; a second sector gear 72, having the same shape and same rotary axis with the first sector gear 71, engaging with the. second cylindrical gear 80 at the first tooth portion 74; * a first spur gear 87 engaging with the first sector gear 71 at the second tooth portion 75, for making unidirectional rotation; a second spur gear 88 engaging with the second sector gear 72 at the second tooth portion 76, for making unidirectional rotation; a driving sprocket 91 for rotating according to a unidirectional rotation of the first spur gear 87 and the second spur gear 88; an idler sprocket 92 engaged with the driving sprocket 91 by means of a chain 86; a rear wheel 46, connected to the idler ~ sprocket, for rotating according to the rotation of the idler sprocket; and a steering handle 32, connected to a front wheel of the kick board, for steering a direction.
9. A bicycle driven by up-down movement of the human feet, comprising: a pedal 42 for putting a foot of a rider thereon and moving up and down according to an up-and-down movement of the foot; a driving bar 40, one end thereof being connected to the pedal 42; a first sector gear 71, bonded to the other end of the driving bar 40, having an axis aperture 77 at a driving bar side, ^having a first tooth portion at an ax'is aperture side and a second tooth portion at the other side, for converting an up-down movement of the pedal into a rotary movement; a first cylindrical gear engaging with the first tooth portion 73 of the first sector gear; a second cylindrical gear 80 engaging with the first cylindrical gear; a second sector gear 72, having the same shape and same rotary axis with the first sector gear 71, engaging with the second cylindrical gear 80 at the first tooth portion 74; a first spur gear 87 engaging with the first sector gear 71 at the second tooth portion 75, for making unidirectional rotation; a second spur gear 88 engaging with the second sector gear 72 at the second tooth portion 76, for making unidirectional rotation; a driving sprocket 91 for rotating according to a unidirectional rotation of the first spur , gear 87 and the second spur gear 88; an idler sprocket 92 engaged with the driving sprocket 91 by means of a chain 86; a rear wheel 46, connected to the idler sprocket, for rotating according to the rotation of the idler sprocket; a steering handle 32, connected to a front wheel of the kick board, for steering a direction; and a seat, connected to part of the bicycle, for cradling a driver's hips.
PCT/KR2002/001362 2001-07-19 2002-07-19 Human powered vehicle with up-down-moving footplate WO2003008261A1 (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
KR2020010021850U KR200263371Y1 (en) 2001-07-19 2001-07-19 Top and bot round trip Pedal of Bicycle
KR2020010021851U KR200263372Y1 (en) 2001-07-19 2001-07-19 Drive apparatus of bicycle
KR2001/0021850U 2001-07-19
KR2001/0021851U 2001-07-19
KR1020020042220A KR20030009205A (en) 2001-07-19 2002-07-18 Human Powered Vehicle with Up-Down-Moving Foot Plate
KR2002/0042220 2002-07-18

Publications (1)

Publication Number Publication Date
WO2003008261A1 true WO2003008261A1 (en) 2003-01-30

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PCT/KR2002/001362 WO2003008261A1 (en) 2001-07-19 2002-07-19 Human powered vehicle with up-down-moving footplate

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WO (1) WO2003008261A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005070752A1 (en) * 2004-01-23 2005-08-04 Craig Schofield Human propelled vehicle
GB2421714A (en) * 2004-08-20 2006-07-05 James Clegg Scooter with pedal mechanism
WO2007009471A2 (en) * 2005-07-17 2007-01-25 Mohamed Ahmed Aly Ahmed Khayal Pedal-scootter with two systems and main gear thereon
WO2007025471A1 (en) * 2005-08-29 2007-03-08 Anding Zhou Sports bicycle capable of being used as scooter
CN102973032A (en) * 2011-09-02 2013-03-20 王凯旋 Lift-type exercise machine with no need for electric energy
US20140265210A1 (en) * 2013-03-15 2014-09-18 Zike, Llc Scooter having a variable speed cam drive system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR970074556A (en) * 1996-05-27 1997-12-10 노강래 Propulsion device of bicycle

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR970074556A (en) * 1996-05-27 1997-12-10 노강래 Propulsion device of bicycle

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005070752A1 (en) * 2004-01-23 2005-08-04 Craig Schofield Human propelled vehicle
GB2421714A (en) * 2004-08-20 2006-07-05 James Clegg Scooter with pedal mechanism
WO2007009471A2 (en) * 2005-07-17 2007-01-25 Mohamed Ahmed Aly Ahmed Khayal Pedal-scootter with two systems and main gear thereon
WO2007009471A3 (en) * 2005-07-17 2007-03-08 Mohamed Ahmed Aly Ahmed Khayal Pedal-scootter with two systems and main gear thereon
WO2007025471A1 (en) * 2005-08-29 2007-03-08 Anding Zhou Sports bicycle capable of being used as scooter
CN102973032A (en) * 2011-09-02 2013-03-20 王凯旋 Lift-type exercise machine with no need for electric energy
US20140265210A1 (en) * 2013-03-15 2014-09-18 Zike, Llc Scooter having a variable speed cam drive system
US9242696B2 (en) * 2013-03-15 2016-01-26 Zike, Llc Scooter having a variable speed cam drive system

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