KR101101478B1

KR101101478B1 - Bicycles

Info

Publication number: KR101101478B1
Application number: KR1020090047577A
Authority: KR
Inventors: 조정환
Original assignee: 조정환
Priority date: 2009-05-29
Filing date: 2009-05-29
Publication date: 2012-01-03
Also published as: KR20100128905A; WO2010137887A2; WO2010137887A3

Abstract

The present invention relates to a bicycle. The bicycle according to the present invention comprises a pedal and a rear wheel assembly and a power transmission unit for transmitting power applied to the pedal to the rear wheel assembly, wherein the power transmission unit is configured to: transmit power to the rear wheel assembly. A first rotating bar which is connected to the rear wheel assembly and is rotated by the power applied to the pedal; A first frame member constituting the skeleton of the bicycle to shield the first rotation bar therein; A second rotary bar which is rotated by the power applied to the pedal and is dynamically connected to and disconnected from the first rotary bar; A second frame member constituting the skeleton of the bicycle, the second frame member being coupled to the first frame member so as to be relatively rotatable and shield the second rotation bar therein; And enabling a dynamic connection between the first rotation bar and the second rotation bar in a state in which the first frame member and the second frame member are disposed coaxially, wherein the second frame member is connected to the first frame member. And a clutch for releasing the dynamic connection between the first rotation bar and the second rotation bar in the folded state.

Description

Bikes {Bicycles}

The present invention relates to a bicycle, and more particularly, to a bicycle having an improved structure so that it can be folded and easily stored even in a narrow space and can be folded smoothly without interference of the chain during the folding operation.

Recreational bicycles, such as lying tricycles, are generally expensive and are stored indoors after use rather than outdoors. However, leisure bikes have a disadvantage that they are not easy to store indoors because they are large and are not easy to be stored in the trunk of a vehicle.

Because of these shortcomings, there is not much demand for leisure bicycles. Therefore, there is a demand for a product development that can prevent the possession and use of a leisure bicycle to be lowered simply because of a storage problem.

In particular, if the leisure bicycle is improved to be fully stored in the trunk of the compact car, the demand will further increase.

In tricycles, the chain is generally wound around the front sprocket and the rear sprocket. For example, when the front wheel is folded to the rear wheel side, the folding operation is smoothly performed by the interference between the chain and the bicycle body. There is a problem. If this problem is solved, the tricycle can be stored more smoothly even in narrow spaces such as the trunk of a vehicle.

The present invention has been made to solve the above problems, to provide a bicycle that can be easily stored even in a narrow space, and can prevent the interference between the chain and the bicycle body (Body) during the folding operation.

According to an aspect of the present invention, there is provided a bicycle having a pedal, a rear wheel assembly, and a power transmission unit for transmitting power applied to the pedal to the rear wheel assembly, wherein the power transmission unit is configured to provide power to the rear wheel assembly. A first rotating bar which is dynamically connected to the rear wheel assembly for transmission and which rotates by a power applied to the pedal; A first frame member constituting the skeleton of the bicycle to shield the first rotation bar therein; A second rotary bar which is rotated by the power applied to the pedal and is dynamically connected to and disconnected from the first rotary bar; A second frame member constituting the skeleton of the bicycle, the second frame member being coupled to the first frame member so as to be relatively rotatable and shield the second rotation bar therein; And enabling a dynamic connection between the first rotation bar and the second rotation bar in a state in which the first frame member and the second frame member are disposed coaxially, wherein the second frame member is connected to the first frame member. And a clutch for releasing the dynamic connection between the first rotation bar and the second rotation bar in the folded state.

A pedal-side bevel gear that is dynamically connected to the pedal and the second rotation bar to enable power transmission and rotation direction change between the second rotation bar and the pedal; And a rear wheel side bevel gear that is dynamically connected to the first rotation bar and the rear wheel assembly to enable power transmission and rotation direction conversion between the first rotation bar and the rear wheel assembly.

The second rotation bar may include a movement preventing rotation bar which prevents movement of the second rotation bar in the direction of the rotation axis; And a movable rotation bar rotatably coupled to the movement preventing rotation bar and slidably coupled to the movement preventing rotation bar to enable movement in the rotation axis direction, wherein the pedal side bevel gear is dynamically connected to the movement prevention rotation bar. It is preferable to have a.

The first rotary bar includes a plurality of drive gears having different gear ratios, and a third rotary bar disposed between the first rotary bar and the rear wheel assembly for power transmission between the first rotary bar and the rear wheel assembly. The three-turn bar has a plurality of driven gears that are selectively engaged with the plurality of drive gears, respectively, so that any one of the driven gears can be selectively engaged with any one of the plurality of drive gears. It is preferably installed to be movable inside the first frame member and configured to be dynamically connected to the rear wheel side bevel gear.

Bicycle according to the present invention having the configuration as described above when the part of the bicycle which is a problem that occurs in the structure that the power transmission has been made only in the conventional chain is folded to another part by folding the chain by interference with the body of the bicycle Overcoming the disadvantages of not being smooth, it has the advantage of easy storage even in narrow spaces such as the trunk of the vehicle.

Hereinafter, with reference to the accompanying drawings, a bicycle according to an embodiment of the present invention will be described in detail.

1 is a side view of a bicycle according to an embodiment of the present invention, Figure 2 is a partial cross-sectional plan view showing the main part of the embodiment of the present invention, Figure 3 is an operating state diagram showing the folding operation of an embodiment of the present invention, Figure 4 Is an operational state diagram showing the length adjustment operation of an embodiment of the present invention.

As shown in these drawings, the bicycle according to the present invention is foldable to be easily stored in a narrow space such as a trunk of a vehicle, and includes a pedal P, a rear wheel assembly B, and a power transmission unit. .

The power applied to the pedal P is transmitted to the rear wheel assembly B side through the power transmission unit to enable movement of the bicycle.

The power transmission unit is for preventing the interference between the conventional chain and the bicycle body (Body) during the folding operation of the bicycle according to the present invention, the structure is a power transmission to the rear wheel assembly (B) side through the chain It is not for a chainless power transmission. Here, the bicycle body constitutes the entire skeleton of the bicycle, and includes a first frame member F1 and a second frame member F2 which will be described later.

The power transmission unit includes a first rotation bar 1, a first frame member F1, a second rotation bar 8, a second frame member F2, and a clutch 2.

The first rotary bar 1 is a rotary motion by the power applied to the pedal (P), it is connected to the rear wheel assembly (B) in order to transmit power to the rear wheel assembly (B). .

In this embodiment, the power connection between the first rotating bar 1 and the rear wheel assembly B is a pair of a plurality of drive gears 3, a plurality of driven gears 7, and a rear wheel side bevel gear 4. Sprockets (51) (52) and the chain (C).

That is, the plurality of drive gears 3 are coupled to the first rotation bar 1 so as to be rotatable with the first rotation bar 1 for gear shifting, and the first driving gears having different gear ratios. (31) and the second drive gear (32).

The plurality of driven gears 7 are coupled to the third rotation bars 6 spaced apart from each other in parallel with the first rotation bar 1, and the first driving gear 31 and the second driving gear 31 are spaced apart from each other. And a first driven gear 71 and a second driven gear 72 meshed with 32, respectively. Here, the third rotation bar 6 is disposed inside the first frame member F1 together with the first rotation bar 1.

In the state where the first driven gear 71 and the second driven gear 72 are arranged as shown by the solid line of FIG. 4, the first driving gear 31 is engaged with the first driven gear 71. In the moved state, as shown by the dotted line in FIG. 4, the second drive gear 32 is engaged with the second driven gear 72 to enable gear shifting. On the other hand, as a moving means (not shown) for moving the third rotary bar (6) connecting the shift dial and the shift dial and the third rotary bar (6) provided on the handle portion of the bicycle having a known configuration. Cables and the like can be employed.

The rear wheel side bevel gear 4 enables power transmission and rotation direction change between the third rotation bar 6 and the rear wheel assembly B, and the third rotation bar 6 and the pair of sprockets. One of (51) and (52) is dynamically connected to (51).

In addition, the chain C is wound around the pair of sprockets 51 and 52 so that the power applied to the pedal P is transmitted through the first and third rotation bars 1 and 6. It can be delivered to the rear wheel assembly (B).

The configuration for power transmission between the first rotation bar 1 and the rear wheel assembly B has been described above. Hereinafter, a configuration for power transmission between the pedal P and the first rotation bar 1 will be described.

The second rotary bar 8 rotates by the power applied to the pedal P, and is dynamically connected to and disconnected from the first rotary bar 1 by the clutch 2. The clutch 2 has the first rotation bar 1 and the second rotation bar 8 in a state in which the first rotation bar 1 and the second rotation bar 8 are coaxially arranged as shown in FIG. 2. It enables a dynamic connection between the first frame bar and the second frame member (F2) is rotated with respect to the first frame member (F1) as shown in FIG. Releases the dynamic link between As the clutch 2 having such a function, for example, a gear which is formed on surfaces facing each other of the first rotation bar 1 and the second rotation bar 8 and can be engaged with each other may be employed.

Here, the first rotation bar 1 is disposed inside the first frame member F1, and the second rotation bar 8 is disposed inside the second frame member F2. When the second frame member F2 is folded, the second rotation bar 8 is folded with respect to the first rotation bar 1.

The first frame member F1 and the second frame member F2 are clamped by the clamping member D in a state of being coaxially arranged as shown by the solid line of FIG. 3, and shown by the dotted line of FIG. 3. As described above, the clamping by the clamping member D is released, so that the folding operation of the second frame member F2 with respect to the first frame member F1 is possible.

On the other hand, in the present embodiment, the second rotary bar 8 includes a movement preventing rotation bar 81 and a movable rotation bar 82. The movement preventing rotation bar 81 is installed inside the second frame member F2 to prevent movement of the second rotation bar 8 in the direction of the rotation axis, and the movable rotation bar 82 is It is slidably coupled to the movement preventing rotation bar 81 to enable movement in the direction of the rotation axis.

That is, it is necessary to adjust the distance between the saddle and the pedal (P) according to the physical condition of the person, in this embodiment, as shown by the dotted line of Figure 4 the movable rotary bar 82 is moved, By adjusting the distance between the saddle and the pedal (P) it is possible to improve the user convenience.

The second rotary bar 8 is the movable rotary bar 82 is powered by the pedal side bevel gear 9 is electrically connected to the pedal (P), thereby applying power to the pedal (P). It can be delivered to the first rotating bar (1). That is, the pedal-side bevel gear 9 is dynamically connected to the pedal P and the second rotation bar 8 to change the power transmission and rotation direction between the second rotation bar 8 and the pedal P. FIG. To make it possible.

The bicycle having the configuration as described above has the following function.

That is, the power applied to the pedal P is not dependent on the chain, and the pedal side bevel gear 9, the second rotary bar 8, the clutch 2, the first rotary bar 1, and the third sequentially. It is transmitted to the rear wheel assembly side via the rotating bar 6, the rear wheel side bevel gear 4, a pair of sprockets 51, 52. That is, according to the conventional tricycle, since the power transmission between the pedal side (front wheel assembly A in FIG. 1) and the rear wheel side (back wheel front A in FIG. 1) must be dependent only on the chain, the pedal When the side portion is folded with respect to the rear wheel side portion, there is a disadvantage that the folding operation is not smoothly performed due to the interference of the chain. However, according to the present invention, since the chain C is wound only on a pair of sprockets 51 and 52 arranged on the rear wheel side portion, the pedal side portion, that is, the first frame member F1, is wound. There is an advantage that can be easily folded with respect to the second frame member (F2) that is the rear wheel side portion. As a result, according to the present invention, the bicycle according to the present invention can be easily stored even in a narrow space such as a trunk of a vehicle, thereby providing a user with convenience of transportation.

On the other hand, Figure 5 is a cross-sectional view showing the main portion of the bicycle according to another embodiment of the present invention. In the embodiment shown in this figure, inside the second frame member 101, there is provided a guide frame 102 which moves together with the movable rotation bar 103. The guide frame 102 is moved together with the movable rotary bar 103 when the tightening by the tightening device 104 is released, and is pressed by the tightening device 104 to prevent its movement. The bevel gear 105 is rotatably connected to the movable rotary bar 103 as in the above-described embodiment. In addition, the movable rotary bar 103 and the guide frame 102 has a non-circular cross-section (not shown), the second frame member 101 has a ratio of the shape corresponding to the guide frame 102 By having a circular groove (not shown), it is possible to prevent the rotation of the movable rotary bar 103 and the guide frame 102.

As mentioned above, although preferred embodiment about this invention was described, this invention is not limited to the above-mentioned embodiment, It is defined by what was described in the claim, and it is clear that various deformation | transformation and adaptation are possible in the technical field to which this invention belongs. Do.

1 is a side view of a bicycle according to an embodiment of the present invention.

Figure 2 is a partial cross-sectional plan view showing the main part of an embodiment of the present invention.

Figure 3 is an operating state showing the folding operation of an embodiment of the present invention.

Figure 4 is an operating state showing the length adjustment operation of an embodiment of the present invention.

5 is a sectional view showing a main part of a bicycle according to another embodiment of the present invention;

* Description of the symbols for the main parts of the drawings *

1: first rotation bar 2: clutch

3: Drive Gear 31: First Drive Gear

32: 2nd drive gear 4: Rear wheel side bevel gear

51, 52: Sprocket 6: Third rotation bar

7: Driven Gear 71: First Driven Gear

72: 2nd driven gear 8: 2nd rotation bar

81: Moveable rotation bar 82: Moveable rotation bar

9: Pedal side bevel gear A: Front wheel assembly

B: Rear wheel assembly C: Chain

D: clamping member F1: first frame member

F2: 2nd frame member P: Pedal

Claims

delete

In a bicycle having a pedal (P), the rear wheel assembly (B) and a power transmission unit for transmitting the power applied to the pedal (P) to the rear wheel assembly (B),

The power transmission unit is:

A first rotating bar (1) which is electrically connected to the rear wheel assembly (B) to transmit power to the rear wheel assembly (B), and which rotates by a power applied to the pedal (P);

A first frame member (F1) shielding the first rotating bar (1) therein by forming a skeleton of the bicycle;

A second rotary bar (8) which is rotated by the power applied to the pedal (P) and is dynamically connected to and disconnected from the first rotary bar (1);

A second frame member (F2) coupled to the first frame member (F1) so as to form a skeleton of the bicycle to shield the second rotation bar (8) therein and to be folded;

In the state in which the first frame member (F1) and the second frame member (F2) is disposed coaxially to enable a dynamic connection between the first rotary bar (1) and the second rotary bar (8), A clutch (2) for releasing a dynamic connection between the first rotating bar (1) and the second rotating bar (8) in a state in which the second frame member (F2) is folded with respect to the first frame member (F1);

Pedal side bevel gear 9 that is dynamically connected to the pedal (P) and the second rotary bar (8) to enable power transmission and rotation direction change between the second rotary bar (8) and the pedal (P). ); And

Rear wheel side bevel gear that is dynamically connected to the first rotation bar (1) and the rear wheel assembly (B) to enable power transmission and rotation direction change between the first rotation bar (1) and the rear wheel assembly (B). Including;

The second rotary bar 8,

A movement preventing rotation bar 81 to prevent movement of the second rotation bar in the direction of the rotation axis; And

It is rotatably coupled to the movement preventing rotation bar 81, is slidably coupled to the movement preventing rotation bar 81 to enable movement in the rotation axis direction, the pedal side bevel gear is connected to the power And a movable rotary bar 82 which is provided.

The method of claim 3,

The first rotating bar 1 has a plurality of drive gears 3 having different gear ratios,

A third rotary bar 6 disposed between the first rotary bar 1 and the rear wheel assembly B for power transmission between the first rotary bar 1 and the rear wheel assembly B,

The third rotation bar 6,

A plurality of driven gears 7 selectively engaged with the plurality of drive gears 3, and one of the driven gears 7 of the driven gears 7 includes the plurality of drive gears 3; A bicycle, which is movably installed in the first frame member (F1) so as to be selectively engaged with any one, and is configured to be dynamically connected to the rear wheel side bevel gear (4).