KR20110041086A

KR20110041086A - Front-wheel drive type bicycle

Info

Publication number: KR20110041086A
Application number: KR1020090098108A
Authority: KR
Inventors: 나필수
Original assignee: 나필수
Priority date: 2009-10-15
Filing date: 2009-10-15
Publication date: 2011-04-21

Abstract

The present invention is almost identical to the conventional rear-wheel-drive bicycle in appearance, can be used without a sense of rejection even users familiar with the conventional rear-wheel-drive bicycle, the front wheel drive by the handle and the rear wheel drive by the paddle is generated completely independently At the same time, the steering wheel operation can be easily made even during the steering wheel operation for the front wheel drive relates to a front wheel drive bicycle to significantly improve the driving efficiency and driving convenience.

The front wheel drive bicycle according to the present invention, the handle body is provided in the front, the saddle is provided in the upper portion is provided with a paddle at the bottom and the rear wheel rotatably coupled to the rear, the paddle and the rear wheel of the bicycle body A rear wheel drive electric unit installed between the rear wheel drive to transmit the rotational force of the paddle to the rear wheel, a handle shaft fitted to the handle coupling hole of the bicycle body and coupled to the left and right pivots, and an upper end of the handle shaft. A handle bar which is integrally formed at both sides of the handle bar, the front spokes connected to the lower side of the handle shaft so as to rotate left and right and branched laterally and extended downward, and a front wheel rotatably coupled to the front spokes, and the front spokes. And the front wheel and the front wheel in the forward direction in accordance with the left and right rotation operation of the handlebar It comprises a power unit for an all-wheel drive for.

Description

All-wheel drive bicycle {FRONT-WHEEL DRIVE TYPE BICYCLE}

The present invention relates to a front wheel drive bicycle, and more particularly, to a front wheel drive bicycle that can be generated by the rotational force for the rotation of the front wheel through the repetitive handle operation by the occupant's hand.

In general, the bicycle is a rear-wheel drive type, has a structure to drive by rotating the rear wheels by transmitting the rotational force generated as the occupant rotates the pedal to the rear wheel through the chain.

Recently, in order to satisfy various preferences of consumers, many front-wheel drive bicycles have been developed to generate rotational force for the rotation of front wheels through repetitive steering wheel operation by the passenger's hand.

However, in the case of a conventional all-wheel drive bicycle, the additional installation of the electric unit is required to transmit the power generated by the passenger's repetitive steering operation to the driving force for the rotational driving of the front wheel. Too different from the appearance of the conventional rear-wheel drive bicycle has a problem that gives a sense of rejection to users familiar with the conventional rear-wheel drive bicycle.

In addition, in the case of the conventional front wheel drive bicycle, the front wheel drive by the steering wheel operation and the rear wheel drive by the paddle operation is not generated independently, there was a problem that driving is unnatural and very inconvenient due to mutual interference.

In addition, in the case of the conventional all-wheel drive bicycle there was a problem that it is very difficult to operate the steering wheel steering.

SUMMARY OF THE INVENTION An object of the present invention is to provide a front wheel drive bicycle which is almost identical to a conventional rear wheel drive bicycle so that it can be used without a feeling of rejection even by users familiar with the conventional rear wheel drive bicycle.

Another object of the present invention is that the front wheel drive by the handle and the rear wheel drive by the paddle is completely independently generated, so that the front wheel drive by the handle and the rear wheel drive by the paddle can be carried out without mutual interference significantly driving efficiency and driving convenience It is to provide an all-wheel drive bicycle that can be improved.

Still another object of the present invention is to provide a front wheel drive bicycle that can be easily made even during steering wheel operation for the front wheel drive to significantly improve the running efficiency and driving convenience.

Objects of the present invention described above, the handle is provided in the front, the saddle is provided in the upper portion is provided with a paddle at the bottom and the rear wheel rotatably coupled to the rear, between the paddle and the rear wheel of the bicycle body A rear wheel drive electric unit installed to transfer the rotational force of the paddle to the rear wheel, and to rotate the rear wheel; A handle bar branched to both sides of the furnace, a front spoke which is connected to the lower side of the handle shaft in a rotatable manner and branched to the left and extends downward, and a front wheel rotatably coupled to the front spoke, and the front spoke and the It is installed between the front wheels and rotates the front wheels in the forward direction according to the left and right rotation operation of the handle bar. Including an electromotive driving unit for wheel drive comprises an all-wheel drive bicycle is made.

According to a preferred feature of the present invention, the front wheel drive electric unit, the drive gear is integrally provided at the lower end of the handle shaft, respectively fitted to the front spoke rotatably coupled to the upper drive gear of the handle shaft, respectively A first electric gear that is engaged or electrically connected to each other is integrally provided, and an electric rotary rod having a second electric gear integrally provided on the lower side thereof, and provided on both sides of the front wheels, respectively engaged with the second electric gear, It includes a one-way clutch for rotating the front wheel in the forward direction in accordance with the left and right rotation of the handle shaft according to the left and right rotation operation of the bar.

According to a preferred feature of the present invention, the one-way clutch is rotatably fixed to the central axis of the front wheel and the motor gear surface to be engaged with the second electric gear is formed on one side thereof and the clutch gear surface on the other side thereof. And a clutch plate which is formed, and an electric ratchet which is fixed to the center of the front wheel and is engaged with the clutch gear surface of the clutch plate only when the clutch plate is rotated in one direction to transfer the rotational force of the clutch plate to the front wheel. .

According to a preferred feature of the present invention, the one-way clutches on both sides are symmetrically formed so as to be electrically connected in opposite directions to each other, so that only one side clutch of the two-way clutches is electrically connected when the left side of the handle shaft rotates and the right side of the handle shaft is rotated. Of the one-way clutch, only the other one-way clutch is electrically connected.

According to a preferred feature of the invention, the front wheel drive electric unit is formed upward on the lower surface of the connection portion of the front spoke connected to the handle shaft and the outer ratchet protrusion is provided on the outer side of the upper surface of the upper portion Inside the surface, the inner side ratchet projection engaging groove is provided in the opposite direction to the outer ratchet protrusion, the bending support is formed protruding on one side of the front spokes, the central axis is formed upward, rotatable to the central axis of the bending support Drive gears are coupled to the lower side and are exposed to the outside integrally, and an outer ring rotatably coupled to the coupling groove is formed at an upper edge thereof, and a center gear is integrally formed on the upper portion of the drive gear at an upper center thereof. And a drive gear part having a first ratchet gear formed at an upper surface of the outer ring to be engaged with the outer ratchet protrusion; A second ratchet gear disposed between the outer ring of the drive gear portion and the center gear and engaged with the inner ratchet protrusion; an inner ring having a gear processing surface formed therein, and a center gear of the drive gear portion; And an external gear interposed between the inner ring and the inner gear, the outer gear being meshed with the gear processing surface of the inner ring and rotatably fixed to a gear fixture extending radially from an upper end of a center axis of the bending support. An electric rotary rod fitted to the other side of the rotatably coupled to the upper side thereof, the first electric gear being engaged or electrically connected to the driving gear of the driving gear unit, and the lower side of the electric rotary rod being integrally provided with the second electric gear; The electric gear surface which is provided integrally with one side of the front wheel and meshes with the second electric gear on one surface thereof Depending on the right and left rotation of the handle shaft according to the right and left rotational operation of the handle bar consists of comprises a disc rotation drive for rotating the wheel in a forward direction.

According to a preferred feature of the present invention, the front wheel drive electric unit is engaged with the first ratchet gear while the outer ratchet protrusion is engaged with the second ratchet gear while the right side of the handle shaft rotates. As a result, the drive gear is rotated to the right, and when the left side rotation of the handle shaft causes the outer ratchet to fail to engage the first ratchet gear, the inner ratchet protrusion is rotated to the second ratchet gear. The inner ring rotates to the left and the outer gear meshed to the inner ring also rotates to the left and the center gear engaged to the outer gear rotates to the right and integrally formed with the center gear. The gear is rotated to the right so that the drive gear is always rotated in the same direction even when the handle shaft is rotated left and right.

According to a preferred feature of the present invention, the steering wheel is provided between the handlebar and the front spoke further comprises a steering unit for rotating the front spoke left and right in accordance with the operation on the handle bar.

According to a preferred feature of the present invention, the steering unit is connected to the rotation handle and the rotation handle, respectively, to be able to rotate back and forth to the branch end side of the handlebar, respectively, the steering wheel is connected to both the rotation handle and the front spoke of the handlebar It comprises a steering wire for rotating the front spoke to the left and right with respect to the handle shaft in accordance with the rotation operation of the.

According to a preferred feature of the invention, the hinge levers are respectively provided on the branch end side of the handle bar, and are connected to the hinge lever and the front spoke, respectively, the front spoke relative to the handle shaft in accordance with the operation of the hinge lever It comprises a steering wire to rotate left and right.

According to the front-wheel drive bicycle according to the present invention, despite the front wheel is rotated by the left and right rotation operation of the handlebar, the user is familiar with the conventional rear wheel drive bicycle in almost the same appearance as the conventional rear wheel drive bicycle There is an excellent effect that can be used without reluctance.

In addition, according to the front-wheel drive bicycle according to the present invention, the front wheel drive according to the left and right rotation operation of the handlebar by the occupant's hand and the rear wheel driving according to the rotation of the paddle by the occupant's foot is completely generated by the handlebar The front wheel drive and the rear wheel drive by the paddle can be performed without mutual interference, there is an excellent effect that can significantly improve the running efficiency and driving convenience.

In addition, according to the front-wheel drive bicycle according to the present invention, the steering wheel of the front wheel can be made independent and easy to operate the front wheel drive simply by turning the steering wheel back and forth during the left and right rotation operation of the handlebar for the front wheel drive driving efficiency And there is an excellent effect that the driving convenience can be significantly improved.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. This is intended to be described in detail so that those skilled in the art can easily carry out the invention, which does not mean that the technical spirit and scope of the present invention is limited.

1 and 2 are a perspective view of a front wheel drive bicycle according to the present invention, Figure 3 is a schematic structural diagram of an embodiment of a front wheel drive electric unit, Figure 4 of another embodiment of a front wheel drive electric unit A schematic structural diagram is shown, FIG. 5 shows a detailed structural diagram of another embodiment of a front wheel drive electric unit, FIG. 6 shows a schematic structural diagram of an embodiment of a steering unit, and FIG. 7 shows a schematic structural diagram of another embodiment of a steering unit. Is shown.

The front wheel drive bicycles 1 and 1 ′ according to the present invention are almost identical in appearance to conventional rear wheel drive bicycles and can be used without a feeling of rejection even by users who are familiar with the conventional rear wheel drive bicycles. The rear wheel drive by the wheel drive and the paddle is generated completely independently, and the steering operation can be easily made even during the steering wheel operation for the front wheel drive so that the driving efficiency and driving convenience can be significantly improved, FIGS. 1 to 7. As shown in the front, there is a handle coupling mechanism 11 is provided in the front, the saddle 13 is provided at the top, the paddle 15 is provided at the bottom and the rear wheel 17 is rotatably coupled to the rear (10) and the rear wheel 17 is provided between the paddle 15 and the rear wheel 17 of the bicycle body 10 and transmits the rotational force of the paddle 15 to the rear wheel 17 to drive the rear wheel 17 to rotate unit 20, the handle shaft 30 is fitted to the handle coupling hole 11 of the bicycle body 10 is coupled to the left and right rotation, and the handle bar is integrally formed on both sides of the upper end of the handle shaft (30) ( 40, a front spoke 50 which is connected to the lower side of the handle shaft 30 in a rotatable manner and branched left and right and extends downward, and a front wheel 60 rotatably coupled to the front spoke 50; It is installed between the front spoke 50 and the front wheel 60 and comprises a front wheel drive transmission unit 70, 70 'for driving the front wheel 60 in accordance with the left and right rotation operation of the handle bar (40).

Here, the bicycle body 10 is to form a bicycle frame excluding the handle shaft 30, the handle bar 40, the front spoke 50 and the front wheels 60, in front of the handle shaft 30 to be rotatable The handle coupling unit 11 is coupled to the upper portion is provided with a saddle 13 supporting the buttocks of the occupant and the lower portion of the paddle to enable the occupant to provide a driving force for the forward drive of the rear wheel 17 through the foot. 15 is provided and the rear wheel 17 is rotatably coupled to the rear.

The rear wheel driving electric unit 20 is installed between the paddle 15 and the rear wheel 17 of the above-described bicycle body 10, the rear wheel driving electric unit 20 is the rotational force of the paddle 15 by the occupant To the rear wheel 17 to rotate the rear wheel 17, the drive sprocket 21 is integrally coupled to the central axis of the paddle 15, and on the central axis of the rear wheel 17 It comprises a driven sprocket 23 is integrally coupled, and a drive chain 25 for electrically connecting the drive sprocket 21 and the driven sprocket 23.

The handle shaft 30 is fitted to the handle coupling hole 11 of the above-described bicycle body 10 so that the handle shaft 30 can be rotated left and right, and the handle shaft 30 forms a rotating shaft for steering operation as in a conventional bicycle. Rather than being integrally formed on the handlebar 40 and rotating left and right according to the left and right operation of the handlebar 40 by the occupant, the front wheel drive electric units 70 and 70 'act to operate. It is formed in a vertical axis that is coupled to the handle coupling sphere 11 of the main body 10, and enables the coupling of the front spoke (50).

The handle bar 40 is integrally branched to both sides at the upper end of the aforementioned handle shaft 30, and the handle bar 40 is a handle part in which the occupant's hand is gripped by the steering unit 80, 80 '. ) And the front wheel drive electric unit (70, 70 ') to enable the operation, the central portion is integrally formed at the top of the handle shaft 30 and branched to both sides on the basis of this is curved and extended to the occupant side Various parts, including a brake lever, may be provided.

The front spoke 50 is connected to the lower side of the above-described handle shaft 30 so as to rotate left and right, and the front spoke 50 supports the center of the front wheel 60 to be rotatable on both sides, and the handle shaft 30 After branching to the left and right with respect to the connection part for), it extends downward.

The front wheels 60 are rotatably coupled to the front spokes 50 described above, and the front wheels 60 are for driving the front wheel drive bicycles 1 and 1 'according to the present invention together with the rear wheels 17. By constituting the wheel, it is formed of a normal bicycle wheel like the rear wheel. The front wheel 60 may also be formed to include a one-way clutch mechanism similarly to the rear wheel 17 so as to be rotationally driven only in the forward direction and not rotationally driven in the backward direction.

Between the front spokes 50 and the front wheels 60, front wheel drive electric units 70 and 70 'are installed, and the front wheel drive electric units 70 and 70' are handlebars 40 by the occupants. In accordance with the left and right rotation operation of the handle shaft 30 due to the left and right rotation operation of the front wheel 60 serves to rotate.

As shown in FIG. 3, the front wheel drive transmission unit 70 is rotatably coupled to the drive gear 71 and the front spoke 50 which are integrally provided at the lower end of the handle shaft 30. On the upper side thereof, the first electric gears 73a which are respectively engaged with the drive gears 71 of the handle shaft 30 or electrically connected by a chain or the like are integrally provided, respectively, and below the second electric gears 73b, respectively. It is provided on both sides of the electric rotary rod 73 and the front wheel 60 and integrally engaged with the second electric gear (73b) to rotate left and right of the handle shaft 30 in accordance with the left and right rotation operation of the handle bar (40). In accordance with the one-way clutch 75 for rotating the front wheel 60 is made.

The one-way clutch 75 is rotatably fixed to the central axis of the front wheel 60 and has an electric gear surface 75b engaged with the second electric gear 73b on one side thereof, and a clutch gear surface on the other side thereof. The clutch plate 75a on which the 75c is formed is fixed to the central portion of the front wheel 60 and is engaged with the clutch gear surface 75c of the clutch plate 75a only when the clutch plate 75a is rotated in one direction. It includes each of the electric ratchet protrusion (75d) for transmitting the rotational force of the clutch plate (75a).

In addition, the two-way one-way clutch 75 is formed symmetrically so as to be electrically connected in the opposite direction, when the left-hand rotation of the handle shaft 30 due to the left side rotation operation of the handlebar 40 by the occupant, both one-way clutch 75 Only one one-way clutch is engaged with the clutch gear surface 75c of the clutch plate 75a and the electric ratchet protrusion 75d fixed to the center of the front wheel 60 so as to transmit the rotational force, and the other one-way clutch is the clutch plate. The electric ratchet protrusion 75d fixed to the center of the front wheel 60 with respect to the clutch gear surface 75c of the 75a rotates so that the rotational force of the clutch plate 75a is not transmitted to the front wheel 60, At the time of the right side rotation of the handle shaft 30 due to the right side rotation operation of the handle bar 40, only the other one-way clutch 75 of the clutch gear surface 75c and the front wheel 60 of the clutch plate 75a is rotated. Electric ratchet protrusion (75d) fixed in the center is engaged The one-way clutch is electrically connected so as to be transmitted, and the electric ratchet protrusion 75d fixed to the center of the front wheel 60 with respect to the clutch gear surface 75c of the clutch plate 75a is turned off, so that the rotational force of the clutch plate 75a is transmitted to the front wheel. To be delivered to (60).

Therefore, when the occupant rotates the handlebar 40 to the left and the left side of the handle shaft 30 while holding the handlebar 40, the drive gear 71 integrally formed at the lower end of the handle shaft 30. Rotating to the right while rotating the first electric gear (73a) engaged to both sides to the left side to rotate to the left side, and rotates the two electric rotary rods 73 to the right, due to the right rotation of the two electric rotary rods 73 The second electric gear 73b integrally formed at the lower end of the rotating rod 73 also rotates to the right, thereby rotating both clutch plates 75a meshed with the second electric gear 73b. 75 is symmetrically formed so as to be electrically connected in opposite directions, so that only one one-way clutch 75 of both one-way clutch 75 is electrically connected to drive the front wheel 60 forward.

In addition, when the occupant rotates the handlebar 40 to the right in a state in which the occupant grips the handlebar 40 and rotates the handlebar 30 to the right, the drive gear 71 integrally formed at the lower end of the handle shaft 30. Rotates the first electric gear 73a engaged to both sides to the left side while rotating to the right side, thereby rotating both the electric rotary bars 73 to the left side, and the electric rotary rods due to the left rotation of both electric rotary bars 73. The second electric gear (73b) integrally formed at the lower end of the (73) also rotates to the left, thereby causing the two rotation clutch plate (75b) engaged with the second electric gear (73b) to rotate, both sides one-way clutch 75 is symmetrically formed so as to be electrically connected in opposite directions, so that only one of the one-way clutch 75 of the two one-way clutch 75 is electrically connected to drive the front wheel 60 forward.

Therefore, in the case of the front wheel drive electric unit 70, even if the occupant rotates the handlebar 40 to the left and right while holding the handlebar 40, the front wheel 60 is driven only forward, handlebar 40 Due to the repetition of the left and right rotation operation of the front wheel 60 may be rotated.

As shown in FIGS. 4 and 5, the front-wheel drive electric unit 70 ′ is upwardly formed on the lower surface of the connection portion of the front spoke 50 connected to the handle shaft 30. The outer side ratchet protrusion 71a 'is provided on the outside, and the inner side ratchet protrusion 71b' is provided on the inside of the upper surface in the opposite direction to the outer ratchet protrusion 71a ', and the front spoke 50 Protruding on one side of the bent and formed to be rotated to the bending support (72 ') and the central axis (72a') of the bending support (72 ') upwardly formed with a central axis (72a') upward An exposed drive gear 73a 'is integrally formed, and an outer ring 73b' rotatably coupled to the coupling groove 71 'is formed at an upper edge thereof, and a center gear 73c' is driven at an upper center thereof. A first ratchet gear face 73d 'integrally formed on the top of the gear 73a' and engaged with the outer ratchet protrusion 71a 'on the upper surface of the outer ring 73b'. The driving gear portion 73 'is formed between the outer ring 73b' and the center gear 73c 'of the driving gear portion 73' and is engaged with the inner ratchet protrusion 71b 'on its upper surface. A second ratchet gear surface 74a 'is formed, and an inner ring 74' having a gear processing surface 74b 'formed on an inner circumferential surface thereof, a center gear 73c' and an inner ring of the drive gear portion 73 '. 74 ') and interlocked with the gear machining surface 74b' of the center gear 73c 'and the inner ring 74' and radially from the top of the central axis 72a 'of the bending support 72'. An external gear 75 'rotatably fixed to the extended gear fixing member 75a', and fitted to the other side of the front spoke 50 so as to be rotatably coupled thereto, and a drive gear 73a of the drive gear portion 73 'on the upper side thereof. Electric rotary rod 76 'which is provided integrally with the first electric gear 76a' which is engaged with or electrically connected to '), and the second electric gear 76b' is integrally provided at the lower side thereof, and the front wheel 60. One side of Is integrally provided on one side thereof, and an electric gear surface 77a 'engaged with the second electric gear 76b' is formed, and the left and right rotations of the handle shaft 30 in accordance with the left and right rotation operation of the handlebar 40 are provided. It comprises a rotary drive disk 77 'for rotating the front wheel 60.

Therefore, when the occupant rotates the handlebar 40 to the right by rotating the handlebar 40 to the right while holding the handlebar 40, the outer ratchet protrusion 71a ′ is the first ratchet gear surface 73d ′. ), While the inner ratchet protrusion 71b 'cannot be engaged with the second ratchet gear face 74a' and is turned away, the drive gear 73a 'of the drive gear 73' rotates to the right. When the driving gear 73a 'is rotated, the electric rotating rod 76', in which the first electric gear 76a 'is engaged with the driving gear 73a', rotates to the left, and the electric rotating rod 76 ' Due to the left side rotation, the second electric gear 76b 'integrally formed at the lower end of the electric rotary bar 76' is also rotated to the left side, whereby the rotary drive plate 77 'engaged with the second electric gear 76b'. As the) is rotated to drive the front wheel 60 forward.

When the occupant rotates the handlebar 40 to the left and rotates the handlebar 30 to the left while the handlebar 40 is held, the outer ratchet protrusion 71a 'is the first ratchet gear surface 73d'. As the inner ratchet protrusion 71b 'is engaged with the second ratchet gear face 74a' while the inner ratchet protrusion 71b 'is engaged with the second ratchet gear surface 74a', the inner ring 74 'rotates to the left and the inner ring 74'. The external gear 75 'meshed with the external gear 75' also rotates to the left, and the center gear 73c 'engaged with the external gear 75' rotates to the right.

When the center gear 73c 'is rotated to the right, the drive gear 73a' formed integrally with the lower portion of the center gear 73c 'is also rotated to the right, and when the drive gear 73a' is rotated to the right, The electric rotary rod 76 ', in which the first electric gear 76a' is engaged with the drive gear 73a ', rotates to the left side, and the lower end of the electric rotary rod 76' is rotated due to the left rotation of the electric rotary rod 76 '. The second electric gear 76b 'formed integrally with the second wheel 76b' also rotates to the left, thereby moving the front wheel 60 as the rotary drive disk 77 'engaged with the second electric gear 76b' rotates. Will be driven.

Therefore, in the case of the front wheel drive electric unit 70 ', even if the occupant rotates the handlebar 40 to the left and right while the occupant grips the handlebar 40, the drive gear 73a' is rotated in the same direction, so that the front wheel Only the forward drive 60, and as a result it is possible to rotate the front wheel 60 due to the repetition of the left and right rotation operation of the handle bar (40).

The front-wheel drive bicycles 1 and 1 'according to the present invention described above may further include a steering unit 80 and 80' installed between the handlebar 40 and the front spoke 50. The steering unit 80. 80 ′ serves to rotate the front spokes 50 side to side according to the manipulation on the handle bar 40. As illustrated in FIG. 6, the branch end of the handle bar 40 is rotated. Rotating handle 81 coupled to each other so as to be rotatable back and forth, and the front pivot 50 relative to the center of rotation of both the pivoting handle 81 and the front spoke 50 of the handlebar 40, that is, the handle shaft 30. Steering wire (83) which is connected to each connection portion of the steering wheel (81) to rotate the front spoke (50) to the left and right with respect to the handle shaft (30) in accordance with the rotation operation of the rotation knob (81). Or a hinge lever 81 'installed at each branch end side of the handlebar 40, as shown in FIG. Steering wires 83 'connected to the hinge lever 81' and the front spoke 50 to rotate the front spoke 50 to the left and right with respect to the handle shaft 30 according to the operation of the hinge lever 81 '. It may be made, including.

The steering units 80 and 80 'also include protective hoses 85 and 85' in which the exposed portions of the steering wires 83 and 83 'are incorporated, and the protective hoses are arranged on the handlebar 40 and the handle shaft 30. It is preferable to further comprise a fastener for fixing.

Therefore, in the front wheel drive bicycle (1, 1 ') according to the present invention, the steering movement of the rotation handle 81 on the handle bar 40 independently of the front wheel drive according to the left and right rotation operation of the handle bar (40) It can be done simply by back and forth rotation operation.

In the case of using the front wheel drive bicycle (1, 1 ') according to the present invention described above, despite the front wheel 60 is rotated by the left and right rotation operation of the handle bar 40, the conventional rear wheel drive bicycle It is almost the same and can be used without a sense of rejection even users familiar with the conventional rear-wheel drive bicycle, the front wheel drive and the paddle 15 by the foot of the passenger according to the left and right rotation operation of the handlebar 40 by the passenger's hand As the rear wheel drive is completely independently generated according to the rotation of the front wheel drive by the handlebar 40 and the rear wheel drive by the paddle 15 can be performed without interference, the left and right of the handlebar 40 for the front wheel drive Even during the pivoting operation, simply by turning the pivoting handle 81 back and forth or by pulling the hinge lever 71 ', the steering of the front wheel 60 can be made independent of the front wheel driving operation and can be easily performed. It can be significantly improved.

1 and 2 are a perspective view of a front wheel drive bicycle according to the present invention.

3 is a schematic structural diagram of an embodiment of a front wheel drive electric unit in a front wheel drive bicycle according to the present invention;

Figure 4 is a schematic structural diagram of another embodiment of a front wheel drive bicycle in the front wheel drive bicycle according to the present invention.

5 is a detailed structural diagram of another embodiment of a front wheel drive bicycle in the front wheel drive bicycle according to the present invention.

6 is a schematic structural diagram of an embodiment of a steering unit in a front wheel drive bicycle according to the present invention;

7 is a schematic structural diagram of an embodiment of a steering unit in a front wheel drive bicycle according to the present invention;

Explanation of symbols on the main parts of the drawings

1, 1 ': all-wheel drive bicycle according to the present invention

10: bicycle body 20: electric unit for rear wheel drive

30: handle shaft 40: handlebar

50: front spoke 60: front wheel

70, 70 ': Electric drive for front wheel drive 80, 80': Steering unit

Claims

A handle body is provided at the front, the saddle is provided at the top, the paddle is provided at the bottom and the rear wheel is rotatably coupled to the rear;

A rear wheel drive electric unit installed between the paddle and the rear wheel of the bicycle body and transmitting the rotational force of the paddle to the rear wheel to rotate the rear wheel;

A handle shaft which is inserted into a handle coupler of the bicycle body and coupled to be rotated left and right;

A handle bar branched to both sides integrally with an upper end of the handle shaft;

A front spoke connected to the lower side of the handle shaft in a rotatable manner and branched from side to side and extending downward;

A front wheel rotatably coupled to the front spokes;

And a front wheel drive electric unit installed between the front spokes and the front wheels and rotating the front wheels in a forward direction according to left and right rotation operations of the handlebars.

The method of claim 1, wherein the front wheel drive electric unit,

A drive gear integrally provided at a lower end of the handle shaft;

A first electric gear that is fitted into the front spokes and is rotatably coupled to each other, and an upper side thereof is integrally provided with a first electric gear that is engaged or electrically connected to a drive gear of the handle shaft, respectively; Rotating rod; And

And a one-way clutch provided on both sides of the front wheel and engaged with the second electric gear, respectively, to rotate the front wheel in the forward direction according to the left and right rotation of the handle shaft according to the left and right rotation operation of the handle bar. All-wheel drive bicycle.

The method of claim 2, wherein the one-way clutch,

A clutch plate which is rotatably fixed to a central axis of the front wheel and engaged with the second electric gear on one side thereof, and a clutch gear surface is formed on the other side thereof, and is fixed to the center of the front wheel; And an electric ratchet protrusion which is engaged with the clutch gear surface of the clutch plate only when the clutch plate is rotated in one direction and transmits the rotational force of the clutch plate to the front wheels, respectively.

The method according to claim 2,

The one-way clutches on both sides are symmetrically formed so as to be electrically connected in opposite directions so that only one-way clutch of the one-way clutch is rotated to the left when the handle shaft is rotated left, and only the other one-way clutch of the one-way clutch to the right when the handle shaft is rotated to the right. All-wheel drive bicycle, characterized in that.

The method of claim 1, wherein the front wheel drive electric unit,

It is formed upward on the lower surface of the connection portion of the front spoke connected to the handle shaft and the outer ratchet protrusion is provided on the outside of the upper surface and the inner ratchet protrusion is provided on the inside of the upper surface in the opposite direction to the outer ratchet protrusion. Coupling groove;

A bending support projecting on one side of the front spoke and having a central axis formed upward;

Rotatingly coupled to the central axis of the bent support, the lower side is formed integrally with the drive gear exposed to the outside, the upper edge is formed with an outer ring rotatably coupled to the coupling groove and the upper center of the center gear A drive gear unit having a first ratchet gear formed integrally with an upper portion of the drive gear and engaged with the outer ratchet protrusion on an upper surface of the outer ring;

An inner ring disposed between the outer ring of the drive gear part and the center gear and having a second ratchet gear formed at an upper surface thereof to be engaged with the inner ratchet protrusion and having a gear processing surface formed at an inner circumferential surface thereof;

An outer part interposed between the center gear and the inner ring of the drive gear part and meshed with the gear processing surface of the center gear and the inner ring and rotatably fixed to a gear fixture extending radially from an upper end of a center axis of the bent support; Gear;

An electric motor that is fitted to the other side of the front spoke and rotatably coupled to the upper side thereof, the first electric gear that is engaged or electrically connected to the drive gear of the drive gear unit is integrally provided, and the lower side is integrally provided with the second electric gear Rotating rod; And

The front wheel is integrally provided on one side of the front wheel, and an electric gear surface engaged with the second electric gear is formed on one surface thereof to rotate the front wheel in the forward direction according to the left and right rotation of the handle shaft according to the left and right rotation operation of the handlebar. The front wheel drive bicycle, characterized in that it comprises a rotary drive disk.

The method according to claim 5, The front wheel drive electric unit,

At the right side rotation of the handle shaft, the outer ratchet protrusion is engaged with the first ratchet gear while the inner ratchet protrusion is not engaged with the second ratchet gear, so that the driving gear rotates to the right.

At the left side rotation of the handle shaft, the outer ratchet protrusion fails to engage the first ratchet gear while the inner ratchet protrusion is engaged with the second ratchet gear, so that the inner ring rotates to the left and the The outer gear meshed with the inner ring is also rotated to the left and the center gear meshed with the outer gear is rotated to the right and the drive gear integrally formed with the center gear is rotated to the right.

And the drive gear rotates in the same direction even when the handle shaft is rotated left and right.

The method according to any one of claims 1 to 6,

And a steering unit installed between the handle bar and the front spokes, the steering unit rotating the front spokes left and right according to an operation on the handle bar.

The method according to claim 7, wherein the steering unit,

Pivoting knobs rotatably coupled back and forth to branch ends of the handlebars, respectively;

A front wheel drive bicycle, comprising: steering wires connected to both pivot handles of the handlebar and the front spokes, respectively, to rotate the front spokes left and right with respect to the handle shaft according to the pivoting operation of the pivot handles. .

The method according to claim 7, wherein the steering unit,

Hinge levers respectively provided at branch end sides of the handlebars;

And a steering wire connected to the hinge lever and the front spoke, respectively, to rotate the front spoke from side to side with respect to the handle shaft according to the operation of the hinge lever.