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WO2012108710A2 - Bicyclette à traction avant - Google Patents

Bicyclette à traction avant Download PDF

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Publication number
WO2012108710A2
WO2012108710A2 PCT/KR2012/000989 KR2012000989W WO2012108710A2 WO 2012108710 A2 WO2012108710 A2 WO 2012108710A2 KR 2012000989 W KR2012000989 W KR 2012000989W WO 2012108710 A2 WO2012108710 A2 WO 2012108710A2
Authority
WO
WIPO (PCT)
Prior art keywords
front wheel
handle
coupled
electric gear
gear
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/KR2012/000989
Other languages
English (en)
Korean (ko)
Other versions
WO2012108710A3 (fr
Inventor
나필수
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 KR1020120013108A external-priority patent/KR20120092516A/ko
Application filed by Individual filed Critical Individual
Publication of WO2012108710A2 publication Critical patent/WO2012108710A2/fr
Publication of WO2012108710A3 publication Critical patent/WO2012108710A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • B62M1/12—Rider propulsion of wheeled vehicles operated by both hand and foot power
    • 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
    • B62M23/00—Transmissions characterised by use of other elements; Other transmissions

Definitions

  • the present invention relates to a bicycle capable of driving the front wheel, and more specifically, when the occupant rotates the handle repeatedly from side to side, the left and right rotational movements of the handle are transmitted to the front wheel through the front wheel drive unit so that the front wheel drive is driven in the forward direction. It's about a possible bike.
  • the bike will ride where the occupant sits on the saddle, grabs the handle of the handlebars, and pedals with his feet to turn the wheels.
  • Bicycles typically have two front and rear wheels, but some bikes have three or four wheels for children or the elderly.
  • the conventional bicycle is a rear wheel driving method in which the kinetic energy of stepping on the pedal is transmitted to the rear wheel through a power transmission means such as a chain, and the rear wheel drives forward.
  • a power transmission means such as a chain
  • the bicycle of the rear-wheel drive type because the occupant uses only the leg strength, so that only the lower body is intensively exercised, there is a problem that the occupant feels severe fatigue on the leg when riding for a long time.
  • the taste of passengers has diversified in recent years, they have become tired of bicycles that can only drive rear wheels. Accordingly, research on bicycles capable of driving the front wheels is being actively conducted.
  • the front wheel drive bicycle has to add a separate auxiliary drive device for driving the front wheel to the handle, the appearance of the bicycle is not neat, there is a problem that the bicycle is heavy and the handle operation is inconvenient.
  • An object of the present invention is to provide a bicycle capable of driving the front wheel by using the left and right rotation of the steering wheel with little difference in appearance from the conventional rear wheel drive bicycle.
  • Another object of the present invention is to provide a bicycle capable of driving the front wheel that can transmit the power to the front wheels through the force of the arm independently of the operation of providing power to the rear wheels through the legs.
  • Another object of the present invention is to provide a bicycle capable of driving the front wheel, which is easy to switch between the use of the left and right rotation of the steering wheel for front wheel drive and the use for turning the bicycle, thereby improving driving efficiency and driving convenience.
  • the bicycle capable of driving the front wheel includes a body, a handle, a front wheel support, a front wheel fork, a front wheel drive.
  • the body is located at the front handle engaging portion and the rear wheel is rotatably coupled.
  • the handle has a handle shaft which is rotatably coupled to the handle engaging portion of the body and a handle formed branched from both sides at an upper end of the handle shaft.
  • the front wheel support portion is located under the handle coupling portion to rotatably penetrate the handle shaft.
  • the front wheel fork is connected to the front wheel support, and the front wheel is rotatably coupled.
  • the front wheel drive unit connects the handle shaft and the front wheel, and converts the left and right rotation of the handle into the forward rotation of the front wheel.
  • the front wheel drive of the bicycle capable of driving the front wheel may be provided with a driving unit, a first electric gear, a second electric gear, a front wheel gear, a one-way clutch.
  • the drive unit is coupled to the lower end of the handle shaft.
  • the first electric gear is coupled to the upper portion of the front wheel fork and connected to the driving unit.
  • the second electric gear is coupled to the lower part of the front wheel fork.
  • the front wheel gear is connected to the second electric gear and drives the front wheel.
  • the one-way clutch transmits the rotation of the drive unit to rotate only in the direction in which the front wheels advance.
  • the front wheel fork is rotatably coupled to the front end of the front wheel support and to the central axis of the front wheel.
  • the front wheel drive of the bicycle capable of driving the front wheel may be provided with a driving unit, a first electric gear, a second electric gear, a front wheel gear, a power transmission unit, a one-way clutch.
  • the drive unit is coupled to the lower end of the handle shaft.
  • the first electric gear is rotatably coupled to the upper portion of the front wheel fork and connected to the driving unit.
  • the second electric gear is rotatably coupled to the lower portion of the front wheel fork.
  • the front wheel gear is connected to the second electric gear and drives the front wheel.
  • the power transmission unit is coupled to the first electric gear and the second electric gear to transmit rotation of the first electric gear to the second electric gear.
  • the one-way clutch transmits the rotation of the drive unit to rotate only in the direction in which the front wheels advance.
  • the front wheel drive of the bicycle capable of driving the front wheel may include a pair of one-way clutches respectively located on both sides of the front wheel. In this case, only one side one-way clutch transmits power when the handle is rotated to the left, and only one side one-way clutch transmits power when the handle is to the right.
  • Bicycle capable of driving the front wheels may further include a coupling adjustment unit.
  • the engagement adjustment unit selectively couples the front wheel support to the handle coupling and the front wheel drive.
  • the front wheel support portion is coupled to the handle engaging portion, the front wheel is driven by the front of the handle, and when the front wheel support portion is coupled to the front wheel drive portion, the direction of the bicycle can be changed by left and right rotation of the handle.
  • the front wheel support of the bicycle capable of driving the front wheel may be provided with a coupling adjustment groove and a support shaft.
  • Coupling adjustment groove is formed on the outer peripheral surface of the front wheel support.
  • the support shaft is located inside the coupling adjustment groove, and the hole is formed up and down.
  • the engagement adjusting portion is coupled to the hole formed in the support shaft so as to be movable up and down.
  • the bicycle capable of driving the front wheel of the present invention may drive the front wheel by using left and right rotation of the handle, and thus does not include an auxiliary device for driving the front wheel separately. Therefore, the appearance is almost similar to the conventional rear-wheel drive bicycle, so that existing passengers can easily ride, and the weight of the bicycle is light.
  • the bicycle capable of driving the front wheel of the present invention selectively couples or separates the front wheel support unit to the handle coupling unit and the front wheel driving unit through the coupling adjustment unit, the steering wheel operation for driving the front wheel and the steering wheel operation for changing the direction are possible independently of each other. . Therefore, the passenger can easily switch between using the left and right rotation of the steering wheel for the front wheel drive and the bicycle direction change, thereby improving driving efficiency and driving convenience.
  • the bicycle capable of driving the front wheel of the present invention prevents the front wheel from moving left and right since the coupling adjustment unit is coupled with the handle coupling unit when the rotation of the handle is used for driving the front wheel.
  • moving the handle can transmit power to the front wheel to rotate forward.
  • FIG. 1 is a perspective view showing a bicycle capable of driving the front wheels according to an embodiment of the present invention.
  • FIG. 2 is a view showing that the coupling adjustment unit selectively couples the front wheel support to the handle coupling unit and the front wheel driving unit according to an embodiment of the present invention.
  • FIG 3 is a view showing that the spring is coupled to the coupling adjustment unit according to an embodiment of the present invention.
  • FIG. 4 is a view conceptually illustrating a one-way clutch according to an embodiment of the present invention.
  • FIG. 5 is a view showing a front wheel drive unit according to another embodiment of the present invention.
  • FIG. 1 is a perspective view showing a bicycle capable of driving the front wheels according to an embodiment of the present invention
  • Figure 2 is a view showing that the engaging adjustment unit selectively couples the front wheel support to the handle engaging portion and the front wheel drive according to an embodiment of the present invention
  • 3 is a view showing that the spring is coupled to the coupling adjustment unit according to an embodiment of the present invention
  • Figure 4 is a view conceptually showing a one-way clutch according to an embodiment of the present invention.
  • the bicycle 1000 capable of driving the front wheel includes a body 1100, a handle 1200, a front wheel support 1300, a front wheel fork 1400, and a front wheel.
  • the driver 1500 is included.
  • Body 1100 forms the overall frame of the bicycle 1000, the handle coupling portion 1110 is located in the front, the rear wheel 1700 is rotatably coupled to the rear and the saddle 1120 is located on the upper side.
  • the sprocket 1131 connected to the pedal 1130 rotates, and the rotational force of the sprocket 1131 is transmitted through a power transmission means such as a chain 1140.
  • the rear wheel 1600 is driven by being transmitted to the rear wheel 1600. Therefore, the bicycle 1000 is advanced forward.
  • the handle 1200 includes a handle shaft 1210 and a handle 1220.
  • the handle shaft 1210 is positioned through the handle coupling portion 1110 of the body 1100 and rotatably coupled to the handle coupling portion 1110.
  • the handle 1220 is a portion that the occupant grips by hand for driving the bicycle 1000 and is formed by branching from the upper end of the handle shaft 1210 to both sides. That is, the handle 1220 may be two right and left.
  • the handle 1220 may be attached with various devices for driving such as a brake lever 1221, a position adjuster 1222, and the like.
  • the front wheel support 1300 is located under the handle coupling 1110.
  • the front wheel support 1300 is rotatably passed through the handle shaft 1210 in the center, the lower portion is branched to both sides.
  • the front wheel support 1300 has a coupling adjustment groove 1310 formed in a vertical direction (up and down direction) on the outer circumferential surface.
  • the coupling adjustment groove 1310 is formed with a support shaft 1320 in the horizontal direction.
  • the support shaft 1320 is formed with a hole in the vertical direction.
  • a coupling adjustment unit 1330 is coupled to the hole formed in the support shaft 1320 so as to be movable up and down.
  • Coupling adjustment unit 1330 has a rod (1331) and a bundle (1332a, 1332b) coupled to both ends of the rod (1331).
  • an elastic member such as a spring 1340 may be coupled to the coupling adjustment unit 1330.
  • the spring 1340 surrounds the rod 1331 and is located between the support shaft 1320 and the bundle 1332b positioned at the lower end of the rod 1331. By providing the spring 1340, the movement of the coupling adjustment unit 1330 is faster and more natural.
  • the front wheel fork 1400 is connected to the front wheel support 1300, and the front wheel 1600 is rotatably connected to the other end of the front wheel fork 1400.
  • the front wheel fork 1400 may be a pair, and in this case, the front wheel forks 1400 are coupled to each of the lower branches branched to both sides of the front wheel support 1300.
  • the front wheel fork 1400 is rotatably coupled to the upper end of the front wheel support 1300, the lower end is rotatably connected to the central axis 1610 of the front wheel 1600. Accordingly, the front wheel fork 1400 may independently rotate about the front wheel support 1300 and the central axis 1610 of the front wheel 1600.
  • the front wheel driver 1500 connects the handle shaft 1210 and the front wheel 1600. Accordingly, the front wheel drive unit 1500 converts the left and right rotation of the handle 1200 to the forward direction rotation of the front wheel 1600.
  • the front wheel driving unit 1500 includes, but is not limited to, a driving unit 1510, a first electric gear 1520, a second electric gear 1530, a front wheel gear 1540, and a one-way clutch 1550.
  • the front wheel drive may convert the left and right rotation of the handle 1200 to the forward rotation of the front wheel 1600 in a different manner.
  • the first electric gear 1520 and the second electric gear 1530 use the term gear, they are not limited to the shape of the gear.
  • the driving unit 1510 is coupled to the lower end of the handle shaft 1210. Therefore, when the handle 1200 rotates left and right, the driving unit 1510 also rotates left and right.
  • the driving unit 1510 is a gear shape, but is not limited thereto.
  • the driving unit 1510 includes a driving coupling unit 1511 at an upper end thereof.
  • the driving coupling unit 1511 is formed with a groove 1511a to which the bundle 1332b positioned at the lower end of the coupling adjusting unit 1330 is coupled.
  • the first electric gear 1520 is connected to the driving unit 1510 at the upper portion of the front wheel fork 1400.
  • the driving unit 1510 rotates, the front wheel fork 1400 rotates through the first electric gear 1520.
  • the second electric gear 1530 is positioned under the front wheel fork 1400 and meshes with the front wheel gear 1540. Therefore, the second electric gear 1530 transmits the rotation of the front wheel fork 1400 to the front wheel 1600 so that the front wheel 1600 is driven in the forward direction. To this end, the second electric gear 1530 and the front wheel gear 1540 may be engaged with various types of gears, such as a bevel gear or a hypoid gear.
  • the front wheel gear 1540 meshes with the second electric gear 1530 and drives the central shaft 1610 of the front wheel. Accordingly, the central axis 1610 of the front wheel may be shaped to penetrate the front wheel gear 1540.
  • the one-way clutch 1550 transmits power in only one direction and does not transmit power in the reverse direction.
  • the one-way clutch 1550 connects the front wheel gear 1540 and the central shaft 1610 of the front wheel.
  • the rotation of the front wheel 1540 drives the central axis 1610 of the front wheel 1600 only when the front wheel 1600 rotates in the forward direction.
  • the one-way clutch 1550 may be in various forms, for example, as shown in FIG. 4.
  • the one-way clutch 1550 includes a gear forming unit 1551 and an elastic support 1552.
  • the gear forming unit 1551 is a portion where a tooth of a gear is formed, and in this embodiment, the front wheel gear 1540 is formed in the gear forming unit 1551.
  • An elastic support 1551 is coupled to the inside of the gear forming unit 1551 while maintaining a constant angle with respect to the inner side.
  • the elastic support 1552 is protruded in the clockwise direction, but may be formed in the counterclockwise direction according to the purpose of use. That is, when the one-way clutch 1550 is mounted on both sides of the front wheel 1600, the forming direction of the elastic support 1551 varies depending on the mounting position.
  • the elastic support part 1552 is mounted with an elastic member such as a spring therein. Accordingly, the elastic support 1552 is compressed when it comes into contact with the shaft 1555 penetrating the inside of the one-way clutch 1550, and is stretched back to its original length when it is spaced apart from the shaft 1555.
  • the elastic support 1552 When the gear forming portion 1551 rotates clockwise, the elastic support 1552 also rotates clockwise. The elastic support 1552 pushes the protrusions formed on the shaft 1555 while rotating clockwise, so that the shaft 1555 rotates clockwise. Through this process, the one-way clutch 1550 transmits power to the shaft 1555.
  • the elastic support portion 1552 when the gear forming portion 1551 rotates counterclockwise, the elastic support portion 1552 also rotates counterclockwise. In this case, since the gear forming unit 1551 does not push the protrusions formed on the shaft 1555, the shaft 1555 does not rotate at all. Thus, the one-way clutch 1550 does not transmit power to the shaft 1555.
  • the one-way clutch 1550 connects the front wheel gear 1540 and the central shaft 1610 of the front wheel, and the front wheel gear 1540 is formed in the gear forming portion 1551 of the one-way clutch 1550, and the front wheel The central axis 1610 of penetrates through the interior of the one-way clutch 1550.
  • the one-way clutch 1550 may include the driving unit 1510, the first electric gear 1520, the first electric gear 1520, the front wheel fork 1400, the front wheel fork 1400, the second electric gear, and the first. 2 may be located between the electric gear and the front wheel gear 1540, the front wheel gear 1540 and the front wheel 1600.
  • the installation position of the one-way clutch 1550 is not limited thereto, and may be various positions that allow the rotation of the handle 1200 to drive the front wheel 1600 in the forward direction.
  • the front wheel forks 1400 are located in pairs, one on each side of the front wheel 1600.
  • the front wheel drive unit 1500 includes a pair of first electric gear 1520, a second electric gear 1530, and a one-way clutch 1550 to be mounted on each front wheel fork 1400 or the front wheel fork 1400. ).
  • Rotating the handle 1200 to the left transmits power only to one side of the pair of one-way clutches, and rotating the handle 1200 to the right transmits power only to the other one-way clutch among the pair of one-way clutches. This occurs because the one-way clutch 1550 transmits power in only one direction.
  • the one-way clutch 1550 is provided on both sides of the front wheel 1600, so that the front wheel 1600 may be rotated in any direction. Can be driven.
  • the pair of one-way clutches 1550 are installed to transmit power when they rotate in opposite directions, the pair of one-way clutches 1550 respectively positioned on both sides when the front wheel 1600 rolls down or pedals, respectively. Since they do not push the protrusions formed on the shaft, the handle 1200 is not moved.
  • the coupling adjusting unit 1330 is coupled to the handle coupling unit 1110.
  • the position of the coupling adjustment unit 1330 may be adjusted through the position adjustment unit 1222.
  • the position adjusting unit 1222 is connected to the coupling adjusting unit 1330 by a wire or the like.
  • the position adjusting unit 1222 moves the coupling adjusting unit 1330 upward, the bundle 1332a positioned at the top of the coupling adjusting unit 1330 is coupled to the groove 1110a formed in the handle coupling unit 1110.
  • the spring 1340 is coupled to the coupling adjusting unit 1330, the spring 1340 is compressed.
  • the occupant repeatedly rotates the handle 1200 to the left and right by the hand, and the handle shaft 1210 is rotated by the rotation of the handle 1200, whereby the front wheel driving unit 1500 rotates the front wheel 1600.
  • the bicycle 1000 is advanced by rotating in the forward direction.
  • the driving unit 1510 coupled to the lower end of the handle shaft 1210 is rotated left and right by the left and right rotation of the handle shaft 1210, so that the first electric gear 1520 engaged with the driving unit 1510 rotates. do.
  • the front fork 1400 is rotated by the rotation of the first electric gear 1520, and thus the second electric gear 1530 is rotated.
  • the front wheel gear 1540 meshed with the second electric gear 1530 rotates.
  • the rotation of the front wheel gear 1540 drives the front wheel 1600 only when the front wheel 1600 is rotated in the forward direction through the one-way clutch 1550.
  • the front wheel fork 1400 and the front wheel gear 1540 are mounted on both left and right sides of the front wheel 1600, respectively, so that the front wheels are rotated in the left direction or the right direction in both cases. It can be used as a power to drive the 1600.
  • the coupling adjusting unit 1330 is coupled to the front wheel driving unit 1500.
  • a groove 1332b disposed at the lower end of the coupling adjusting unit 1330 is formed in the driving coupling unit 1511 located at the upper end of the driving unit 1510 ( 1511a).
  • the spring 1340 is coupled to the coupling adjustment unit 1330, the spring 1340 is about to be restored to its original position by elasticity, so that the coupling adjustment unit 1330 is fast. Will move.
  • the bicycle 1000 changes direction.
  • the bicycle 1000 according to the exemplary embodiment of the present invention does not have a separate auxiliary device visible from the outside for driving the front wheels, and thus the appearance of the bicycle 1000 is almost similar to that of the conventional bicycle. Therefore, there is no objection to the existing passengers, and the weight of the bicycle is also light.
  • front wheel support unit 1300 is selectively coupled to the handle coupling unit 1110 and the front wheel drive unit 1500 through the coupling adjustment unit 1330, so that the left and right rotation of the handle is used for driving the front wheel and for changing the bicycle direction. Interchange is easy and fast. Therefore, the occupant can comfortably ride the front wheel drive bicycle.
  • FIG. 5 is a view showing a front wheel drive unit according to another embodiment of the present invention.
  • the front wheel driving unit 2500 of the bicycle capable of driving the front wheel according to the embodiment of the present invention includes a driving unit 2510, a first electric gear 2520, a second electric gear 2530, and a front wheel gear. 2540, a one-way clutch 2550, and a power transmission unit 2560. Since the driver 2510 is the same as that described with reference to FIG. 1, detailed description thereof will be omitted.
  • the first electric gear 2520 is rotatably coupled to the upper portion of the front wheel fork 2400 and is connected to the driving unit 2510. Therefore, when the driving unit 2510 rotates, the first electric gear 2520 also rotates.
  • the second electric gear 2530 is rotatably coupled to the lower portion of the front wheel fork 2400 and meshes with the front wheel gear 2540.
  • the front wheel fork 2400 is fixedly coupled to the front wheel support 2300 and the central shaft 2610 of the front wheel 2600. Therefore, the front wheel fork 2400 does not transmit the rotation of the first electric gear 2520 to the second electric gear 2530.
  • the front wheel driver 2500 includes a power transmission unit 2560 to transmit rotation of the first electric gear 2520 to the second electric gear 2530.
  • the power transmission unit 2560 is coupled to the first electric gear 2520 and the second electric gear 2530 to transmit rotation of the first electric gear 2520 to the second electric gear 2530.
  • the power transmission unit 2560 is a rod shape coupled to the first electric gear 2520 and the second electric gear 2530, but in another embodiment, the power transmission unit 2560 has a cylindrical shape and the front wheel fork ( 2400 may be installed to be located inside the power transmission unit 2560.
  • the shape of the power transmission unit 2560 is not limited thereto, and may be various shapes connecting the first electric gear 2520 and the second electric gear 2530.
  • the driving unit 2510 When the driving unit 2510 is rotated by the left and right rotation of the handle, the first electric gear 2520 connected to the driving unit 2510 rotates.
  • the power transmission unit 2560 is rotated by the rotation of the first electric gear 2520, and thus the second electric gear 2530 is rotated.
  • the rotation of the second electric gear 2530 is transmitted to the front wheels 2600 only when the front wheels 2600 are rotated in the forward direction by the one-way clutch 2550 to drive the front wheels 2600 in the forward direction.
  • the one-way clutch 2550 may be located between the power transmission unit 2560 and the second electric gear 2530 or between the power transmission unit 2560 and the first electric gear 2520.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Automatic Cycles, And Cycles In General (AREA)

Abstract

La présente invention concerne une bicyclette à traction avant. La bicyclette à traction avant de la présente invention permet également d'être utilisée par propulsion au moyen de pédales, et permet d'assurer un actionnement par traction avant par rotation répétée des poignées du guidon vers la droite et la gauche par l'utilisateur. La rotation vers la droite et la gauche des poignées du guidon est transmise à la roue avant par l'intermédiaire d'une unité de traction avant pour faire tourner celle-ci vers l'avant. La position d'une unité d'ajustement d'articulation est ajustée pour permettre le fonctionnement des poignées du guidon pour la traction avant ou pour changer de direction. Selon la présente invention, la traction avant peut être assurée sans appareil auxiliaire séparé, et le fonctionnement des poignées du guidon pour la traction avant et le fonctionnement des poignées du guidon pour changer de direction peuvent être exécutés de manière indépendante.
PCT/KR2012/000989 2011-02-11 2012-02-10 Bicyclette à traction avant Ceased WO2012108710A2 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR10-2011-0012165 2011-02-11
KR20110012165 2011-02-11
KR1020120013108A KR20120092516A (ko) 2011-02-11 2012-02-09 전륜 구동이 가능한 자전거
KR10-2012-0013108 2012-02-09

Publications (2)

Publication Number Publication Date
WO2012108710A2 true WO2012108710A2 (fr) 2012-08-16
WO2012108710A3 WO2012108710A3 (fr) 2012-10-11

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Application Number Title Priority Date Filing Date
PCT/KR2012/000989 Ceased WO2012108710A2 (fr) 2011-02-11 2012-02-10 Bicyclette à traction avant

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WO (1) WO2012108710A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111032503A (zh) * 2017-10-12 2020-04-17 罗弼洙 自行车的推进装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100283133B1 (ko) * 1998-09-08 2001-03-02 박준신 자전거구동장치
KR20040097109A (ko) * 2004-10-29 2004-11-17 신철균 자전거의 전륜 구동 장치
KR100868202B1 (ko) * 2007-04-04 2008-11-12 이규상 핸들링 간섭방지용 전륜 구동부를 갖는 주행체

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111032503A (zh) * 2017-10-12 2020-04-17 罗弼洙 自行车的推进装置

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