MXPA97006587A - Appliance to change bicycle axle power - Google Patents

Abstract

A device for changing the power of a bicycle axle is provided. The apparatus including a transmission section on one side of an axle cover of a rear wheel, a section of the bidirectional pedaling apparatus (APBD) on the other side thereof and a clutch between the transmission section and the APBD section It provides the power in one direction at all times regardless of the direction of the power applied to it and changes the speed according to the state of drive of the bicycle. Also, a lever is inserted on the left side of an arrow of the shaft having holes in both ends thereof to control the transmission section and a bolt lever is inserted on the right side of the shaft arrow to control the section of the shaft. APBD. The power shift device of the bike axle can be connected to a general bicycle compatible with the bike

Description

APPLIANCE TO CHANGE BICYCLE AXLE POWER Technical Field The present invention relates to a switch for changing the power that is installed on a rear axle of a bicycle and, more particularly, to an apparatus for changing power having a transmission on one side, a bidirectional pedal device on the another end and a clutch between them, which pulls the power only in one direction with respect to the applied power direction and simultaneously changes the rotation speed of the bicycle according to the state of the bicycle's trajectory to drive a wheel Rear of the bicycle. Prior Art Generally, a bicycle is classified into three: a general bicycle as a means of transport, a mountain bike used exclusively for a mountain exercise and cycles used for a sporting event. Basically, all previous bicycles include front and rear wheels before and after a bicycle frame and a pair of pedals as a source of power supply before and after a bicycle frame and a pair of pedals as a source of supply of power between two wheels. The driving force for the bicycle is obtained by pedaling and then the force is transmitted to the rear wheel via a drive sprocket, a chain and a sprocket in sequence. However, most bicycles can be transported forward only when pedaling forward.

That is, the bicycle can not travel forward when pedaling backward. This kind of a one-way bicycle easily causes fatigue in the cyclist's leg and uneven development in a leg muscle when the cyclist rides for many hours. Therefore, in order to solve the problems, many inventors have made an effort in the development of a bidirectional pedaling apparatus that can be applied to a conventional one-way bicycle. The bi-directional pedaling device developed up to now, which allows the bicycle to travel forward when pedaling both forward and backward, can be classified approximately in three according to the methods adopted for the same. That is, there are methods that use a gear, a bevel gear and a planetary gear. Here, the bi-directional pedal apparatus refers to a device in which a bicycle can travel forward at all times when the bicycle is pedaled forward or backward and slow travel is allowed by selectively controlling a lever if required when pedal the bicycle backwards, like a conventional bicycle. As a representative invention related to the bi-directional pedaling apparatus, ants and others (EPO Publication No. 0,369,925) discloses a bidirectional pedaling apparatus adopting the auxiliary gear, Foster (US Patent No. 5,435,583) discloses a bi-directional pedaling apparatus which adopts the bevel gear and a clutch and the present applicant (Application No. PCT / KR 96/00236) describes a bidirectional pedaling apparatus which adopts the planetary gear. The above inventions have a medium gear (auxiliary gear, bevel gear and planetary gear) in common in order to change the power direction, however, it also has difference in a method to change the power direction, the degree of distribution of load applied to each part during the change of power, precision quality of parts and compatibility with a conventional bicycle. However, all inventions are developed to be able to connect to an arrow of pedals, not to an arrow of the rear wheel. Particularly, the bidirectional pedaling apparatus (Application No. PCT / KR 96/00236) invented by the present applicant has many advantages in the aspects of precision of parts, uniformity in the change of power, compatibility to be directly connectable to a pedal arrow of the conventional bicycle. However, the shapes of the drive sprocket and a crank portion are different from those of the conventional bicycle, so that these parts must be replaced by new ones where the apparatus is attached to the conventional bicycle. Also, since the bidirectional pedaling apparatus invented by the present applicant is attached to the outside of the pedal arrow similar to the apparatuses described above, the attached apparatus protrudes outwardly from the frame of the bicycle. The protruding device can obstruct the pedaling by a cyclist. In addition, it is difficult to join the bi-directional pedaling device projecting towards the outside of the bicycle frame for a newly developed bicycle which can be bent for transport. Therefore, the above problems have originated requirements in development of a new bidirectional pedaling apparatus that may be attached to an arrow of the rear wheel. On the other hand, in order to reduce fatigue in the legs during pedaling and effectively use the energy applied to the pedals, a pedaling rhythm and the pedaling force applied to the pedals must be constant. A transmission for a bicycle is developed to satisfy the above conditions, which control a gear ratio between a drive sprocket and a driven sprocket, thus appropriately applying the pedaling force in accordance with a driving resistance to drive the bicycle . Like the transmission, there is an external type and an internal type. The external transmission directly changes the gear ratio while applying a chain on a plurality of sprockets having different diameters in sequence that are installed to a pedal arrow and a shaft arrow and the internal transmission changes the gear ratio by installing gears planetary in a body of the rear axle. The internal transmission can be miniaturized much compared to the external transmission and be protected from external impact while blocking the influx of dust or foreign substance since the internal transmission is installed on the shaft cover. Due to these advantages, the internal transmission is widely adopted for the general bicycle. Here, Japanese Patent Laid-open Publication No. Heisei 5-65094 (dated March 3, 1993) could be referred to as an example of inventions related to internal transmission. There are additional inventions related to the internal transmission installed on the rear axle, which are to increase the efficiency of the transmission by itself or by controlling the gear ratio. However, an internal transmission including a bidirectional pedaling device to change the power direction is not known. As described above, most bidirectional pedaling devices have been installed to the pedal arrow, or to an arrow of the rear wheel axle. Also, most of the inventions related to the shaft arrow is limited to transmission only and it is difficult to find the search for a multi-purpose bicycle including both the transmission and the bi-directional pedaling device. Therefore, the requirements for a multi-purpose bicycle apparatus have increased in which the bidirectional pedaling device for the balanced development of muscle in a human's legs and transmission for effectiveness using energy applied to the pedal and simultaneously a bicycle that has high safety and convenience to handle it by installing all the parts. Description of the Invention It is an object of the present invention to provide a connection of multiple purposes related to a bicycle, which can optimize the driving efficiency and uniformly develop the muscles in human legs during the drive of the bicycle. The feature of the present invention is that a bidirectional pedaling apparatus and an improved transmission are both installed on an axle shaft of a rear wheel. Consequently, the bidirectional pedaling device can develop the muscle of a cyclist's legs in balance and the transmission can optimize the efficiency of the cyclist's exercise. The basic structure of a power shift apparatus of a bicycle axle according to the present invention as follows. First, a transmission section is installed at one end of a shaft arrow and a section of the bidirectional pedaling device (APBD) is installed at the other end thereof and a clutch is installed in the middle portion. Then, the subassembly of the three anterior parts is inserted into an axle cover and then both ends of the axle cover are closed by a cover at one end and a driven wheel at the other end thereof. The transmission section of the power shift apparatus includes a sun gear, a vehicle and a ring gear. The transmission section having the above structure receives clutch power or the APBD section that will be described later. The power applied to the transmission section is transmitted to the shaft cover via several trajectories. The rear wheel of the bicycle travels at low speed, medium or high according to the power transmission routes Also, the clutch of the present invention has a hollow cylindrical shape, the groove having a plurality of tabs inclined at one end of the outer side and projections at the other end of the The clutch having the above structure is detachably coupled to the ring gear on the other side towards the APBD section. The clutch location can be changed on the left and right by a level installed on the shaft shaft. The clutch does not transmit the clutch. power to the transmission section (high speed) changing the location of them Also, the section APBD n of the present invention includes a ring gear, a star wheel and two vehicles The section of APBD having the structure receives the power of a drive wheel that will be described later and transmits the received power to the clutch and the section The APBD section applies the clockwise power (based on the view from the right with respect to the direction of a bicycle's trajectory) at all times regardless of the direction of the power transmitted from the wheel Therefore, the constituent parts (transmission section and axle cover clutch that will be described) which are located to be able to receive the power of the two-pedal device section rotates only clockwise. On the other hand, a shaft cover having a cylindrical shape with multiple passages acts as a housing for receiving the constituent parts of the present invention. Two crashes are formed on the inner wall of the shaft cover to receive the power of the transmission section. Also, tabs are formed on both ends of the outer side thereof to engage with the spokes of the rear wheel. Also, a drive wheel of the present invention rotatably couples to the shaft shaft while integrally connecting to a driven sprocket. Therefore, the drive wheel receives the power generated from the pedals via the driven gear and transmits the power to the PABD section. Also, a bolt lever is inserted into the shaft arrow to control the AOBD section. To add to the above description, the power changing apparatus of the bicycle according to the present invention includes the transmission section, the clutch, the APBD section, the shaft protection, the cover and the driven sprocket that is they connect in sequence. The apparatus of the present invention can be attached to the tip of the rear fork of the frame of a conventional bicycle by coupling the tabs of the axle cover to the spoke, being thus connected to the rear wheel of the bicycle.

The power transmission routes of the power changing apparatus according to the present invention will be described in summary. First, the power generated from the pedals is transmitted to the driven sprocket via a crank, a drive sprocket and a chain in sequence. The driven gear provides the power to the apparatus of the present invention while rotating together with the drive wheel and transmitting the power to the APBD section regardless of the direction of rotation thereof. The APBD section transmits the received power to the clutch and the transmission section and the transmission section provides the power transmitted to the shaft cover at the end. Consequently, the power provided to the shaft cover drives the rear wheel of the bicycle. As described above, in the power changing apparatus of a bicycle according to the present invention, the APBD section that was installed to the pedal arrow projecting therefrom in the prior art is installed on the cover of the bicycle. Rear wheel axle, so that the forward drive pedaling in reverse, it is possible without inconvenience to pedal and simultaneously the transmission section is installed on the axle cover together with the transmission section is installed on the axle cover together with the APBD section to effectively use the energy required to power the bicycle. Also the bicycle power changing apparatus can be easily connected to the rear wheel of the conventional bicycle, thus improving the compatibility with the conventional bicycle parts. Brief Description of the Drawings Fig. 1 is a sectional view of a power changing apparatus of a bicycle axle according to the present invention.

Fig. 2 is an exploded perspective view of the bicycle shaft power changing apparatus shown in Fig. 1. Figs. 3A, 3B and 3C are a left side view, seen in front section and right side view of a first vehicle of a transmission section of the power changing apparatus according to the present invention, respectively. Figs. 4A, 4B and 4C, are a left side view, seen in front section and right side view of a first ring gear of the transmission section of the power changing apparatus according to the present invention, respectively. Figs. 5A, 5B and 5C are a left side view, disheveled front section view and right side view of a second ring gear of a section of the bidirectional pedaling apparatus (APBD) of the power changing apparatus according to the present invention, respectively. Figs. 6A and 6B are seen in front section and sectional view cut along line a-a of FIG. 6A of a second vehicle of the APBD section of the power changing apparatus according to the present invention, respectively.

Fig. 7 is an exploded front sectional view of a star wheel of the APBD section of the power changing apparatus according to the present invention, respectively: Figs. 8A and 8B are seen in front section and sectional view cut along line a-a of Figure 8A, of a third vehicle of the APBD section of the power changing apparatus according to the present invention, respectively. Figs. 9A, 9B and 9C are a left side view, seen in front section and right side view of a drive wheel of the power changing apparatus according to the present invention, respectively; Figs. 10A, 10B and 10C, are seen in section cut along the line aa of Fig. 1, illustrating operational states when the power is applied clockwise and counterclockwise and slow-moving state, respectively. Fig. 11 is a diagram showing the operational state when the speed is changed to the first stage in the power changing apparatus according to the present invention; Fig. 12 is a diagram showing the operational state when the speed is changed to the second stage in the power switching apparatus according to the present invention; and Fig. 13, is a diagram showing the operational state when the speed is changed to the third stage in the power changing apparatus according to the present invention. Best mode for carrying out the invention. Referring to Figs. 1 and 2, approximately a power changing apparatus of the present invention will be described. In the power changing apparatus of the present invention, a transmission section I, a clutch 40 and a section II of the bidirectional pedaling apparatus (APBD) are installed in the left, middle and right portions in Figs. 1 and 2, respectively, centering an arrow of axis 10. Also, a subassembly including transmission section I, clutch 40 and section II of APBD is enclosed by a shaft cover. A support rod 2 and a driven gear 94 connected to a drive wheel 90 are connected to the left and right ends of the power changing apparatus, respectively. The left and right portions of the shaft 10 arrow have a hollow cylindrical shape, wherein a lever 3 and a bolt lever 4 are inserted in the right-left portions respectively. Here, the lever 3 controls the clutch 40 and the bolt lever 4 controls a third vehicle 80 of the II section of APBD. Also, the left-right portions of the shaft 10 arrow have an outer surface of the screw that is connected to a bicycle frame when it is attached to the power shift apparatus to a conventional bicycle. Here, the support rod 2 is used as auxiliary means for tightly connecting the power changing apparatus of the present invention to the frame of the bicycle.

Then, the power changing apparatus of the present invention will be described in detail with reference to the related drawings. As described above, the power changing apparatus of the present invention basically includes the transmission section I, the clutch 40 and the section II of the PABD. Also, these three parts are coupled by centering the shaft 10 arrow and closing the shaft cover 100 to form a subassembly. Then, both sides of the subassembly close and cover 5 and 103 to form a final unit. Therefore, the present invention will be described in detail so that the shaft 10 arrow around which all the parts engage, the main constituents including transmission section I, clutch 40 and section II of APBD and other constituent parts. Before the detailed description, we clarify the following. That is, since the power changing apparatus of the present invention refers to a rotary movement, the main parts of the apparatus have a circular, cylindrical or hollow cylindrical shape. Also, all star wheels adopted in the exclusive power shift apparatus of a fourth star 72, which is a reverse directional star, are forward directional star wheels. First, the shaft 10 arrow of the power change apparatus according to the present invention will be described with reference to Figures 1 and 2. The shaft 10 arrow has a hollow arrow with multiple steps as shown in Figure 2. On the outer side of the shaft 10 arrow, a string portion, a first groove 11, a first sun gear 12, a first pin hole 13, a second groove 14 and a second bolt hole 15 and another portion of rope they form from the left to the right of it. Also, on the inner side of the shaft 10 arrow, a cylindrical hole is formed in the left and right portions, that is, the cylindrical hole does not go through the shaft 10 arrow. The constituent parts of the change apparatus Power, which will be described later, are assembled to the shaft 10 arrow, having the previous shape in sequence. The transmission section I as one of the main constituents of the power changing apparatus will be described with reference to Figures 1 to 4C. The transmission section I includes the first sun gear 12, a first vehicle 20 and a first ring gear 30 which will be described in sequence. The first solar gear 20 of the transmission section 1 is formed integrally in the left portion of the shaft 10 arrow without being rotated. The first vehicle 10 of the transmission section I has a hollow cylindrical shape as shown in Figures 1, 2 and 3A to 3C. Two openings 25 are formed in the outer circumference of the left side of the first vehicle 20 four holes are formed in the circumference and third grooved grooves 24 are formed in the inner portion of the right orifice. First seals are installed in the openings 25 formed along the outer circumference of the left side. Also, a plurality of planetary gears 22 are installed in the holes formed in the circumference of the first vehicle 20 by centering each corresponding planetary gear shaft 23 to be rotatable in the same direction as the axial direction of the first vehicle 20. In the first vehicle 20 having the above shape, the first detents 21 of the first vehicle 20 are coupled with a first star 101 of the shaft cover 100 which will be described later, the inner side of the planetary gears 22 engage with the third grooves 41 of the clutch 40. which will be described later. The first gear of the ring 30 of the transmission section I has a hollow cylindrical shape as shown in figures 1, 2 and 3A to 3C. Two openings 25 are formed in the outer circumference of the left side of the first vehicle 20 and four holes are formed in the circumference and the third grooves of grooves 24 are formed in the inner portion of the right side. The first detents 21 are installed in the openings 25 formed together with the outer circumference of the left side. As well, a plurality of planetary gears 22 are installed in the holes formed in the circumference of the first vehicle 20 by centering each corresponding planetary gear arrow 23 to be rotatable in the same direction as the directional of the first vehicle 20.

In the first vehicle 20 having the inner shape, the first detents 21 of the first vehicle 20 are coupled with a first star 101 of the cover of the shaft 100 that will be described later, the inner side of the planetary gears 22 engage with the first gear Solar 12 and the third grooved grooves 24 of the first vehicle 20 are coupled with the third grooves 41 of the clutch 40 which will be described later. The first ring clutch 30 of the transmission section I has a hollow cylindrical shape as shown in Figures 1, 2 and 4A to 4C. A first clutch 31 is formed in the inner wall of the left side and two holes are formed in the circumference thereof and a third star 32 is formed in the inner wall of the right side. The second detents 33 are elastically installed in the holes of the first ring gear 30 by a spring 34. Here, the second detents 33 are formed similar to a boomerang and the center of the second detents 33 are installed parallel to an axis of the first gear. of ring 30. In the first ring gear 30 having the above shape, the first gear 31 engages with the outer side of the planetary gear 22 and the outer side of the second detents 33 engages with a second star 102 of the shaft cover 100 and the inner side thereof engages with the projections 42 of the clutch 40 and the third star 32 engages with third detents 35 of a second ring gear 50 of the II section of APBD which will be described later.

The transmission section I having the structure described above receives the power of section II of APBD and then transmits the power to the shaft cover 10 after changing the speed of rotation at a low, medium or high speed according to the location of the clutch 40 which will be described above. The clutch 40 of the power changing apparatus according to the present invention has a hollow cylindrical shape as shown in Figures 1 and 2. The clutch 40 has the third grooves 41 having a plurality of tabs inclined in the eternal portion of the left side and two holes that perforate the circumference of the same, and four projections 42 in the outer portion of the right side. In the clutch 40 having the above shape, the third grooves 41 engage with the third grooves of grooves 24 of the first vehicle 20 of the transmission section I and four projections 42 are slidably connected to four grooves 52 of the second ring gear 50. of section II of APBD that will be described later. In order to install the clutch 40 centering the shaft 10 arrow, the auxiliary parts including a ring 43, a clutch key 44, a clutch ring 45, a clutch spring 46, etc. are required. Each shape of the auxiliary parts can be imagined by understanding the assembly process that will now be described. In the clutch assembly 40, the fastening ring 43 having two holes in the circumference thereof is first inserted in the arrow of the shaft 10 to contact the first circumference thereof is first inserted in the shaft arrow 10 to contact the first holes of the pin 13 and the clutch 40 is placed on the fixing ring 40. Then, the first holes the pin 13 of the arrow of the shaft 10, the holes of the fixing ring 43 and the holes of the clutch 40 are equalized with each other and then the clutch key 44 is inserted so that the key 44 of the clutch is fixed by the jaws of the clutch ring 45. The outer side of this portion of the assembled clutch is supported by the spring of clutch 46 for elastically controlling the clutch 40. The clutch 40 is controlled by the lever 3. That is, the location of the clutch 40 is changed to the right when the lever 3 is pulled and the Brague 40 returns to the initial location when the lever grip is released. The clutch 40 transmits the power received from the II-section APBD to the transmission section I while holding to the left for high speed and not to the transmission section I while changing to the right for the medium and low speeds. Section II of APBD will be described with reference to Figures 1, 2 and 5A, at 8C. Section II of APBD includes a second ring gear 50, a second vehicle 60, a star wheel 70 and a third vehicle 80 that will now be described in sequence. The second ring gear 50 of section II of APBD is a subassembly (see Fig. 2) formed by combining three parts that is manufactured separately as shown in Figure 5B. The subassembly is considered as a wall since each part integrally forming the subassembly rotates during the rotational movement. Two openings 51 are formed in the circumference of the left side and four slots 52 are formed in the inner portion of the left side. Also, a second gear 53 is formed in the inner wall of the middle portion and a fifth star wheel 54 is formed in the inner wall of the right side. The third detents 55 were installed in the two openings 51 formed in the circumference of the left side. In the second ring gear 50 having the above shape, the third detents 55 engage the third star wheel 32 of the first ring gear 30 and four slots 52 are slidably connected to four projections 42 of the clutch 40, respectively. Also, the second gear 53 is coupled with a plurality of planetary gears 63 of two passages of the second vehicle 60 which will be described below and the fifth star 54 is coupled with fifth detents 85 of a third vehicle 80 which will be described later. The shape of the second vehicle 60 of section II of APBD is similar to a hollow cylinder as shown in Figs. 1, 2, 6A and 6B. A nut hole 61 is drilled in the circumference of the left side and second grooves in grooves 62 are formed in the inner portion of the left side. Also, four holes are drilled in the circumference of the second vehicle 60 and the two two-step planetary gears 63 are rotatably fixed by each corresponding planetary gear shaft 64 in the respective holes. The second vehicle 60 having the above shape is connected to the second groove 14 of the shaft 10 arrow and a bolt (but not shown) is inserted into the nut hole 61 to prevent the second vehicle 60 from sliding from the arrow of the axis 10, so that the second vehicle 60 is integrally connected to the shaft 10 arrow. As shown in Fig. 2, each small gear of the two-step planetary gears 63 is coupled with a second sun gear 71 and each large gear thereof engages with the second gear 53 of the second ring gear 50. The second vehicle 60 by itself does not rotate but changes the direction of the applied power in the counterclockwise direction in the clockwise direction of the clock while only two planetary gears of two steps rotate. The two-step planetary gears 63 are designed to be replaced by other planetary gears in two steps that have different gear ratios in pairs, so that section II of the APBD including planetary gears in two steps 63 can also serve as means of speed change. The star wheel 70 of section II of APBD is a subassembly (see Fig. 2) formed by combining two parts that are manufactured separately as shown in Figure 7. The second sun gear 71 is located on the left side of the star wheel 70 and a fourth star 72 is formed on the inner wall of the right side of the star wheel 70. The second sun gear 71 of the star wheel 70 engages with the two-step planetary gears 63 of the second vehicle 60 and the fourth star 72 is coupled with four detents 84 of the third vehicle 80. The star wheel 70 engages with the peripheral parts are rotatably fixed about the shaft 10 arrow and receives only the power in the counter-clockwise direction. clock to transmit the received power to the second vehicle 60. Consequently, the star wheel 70 rotates only counterclockwise. Finally, the third vehicle 80 of section II of APBD has a hollow cylindrical shape as shown in Figs. 1, 2, 8A and 8B. Two slots 81 intersect the circumference of the third vehicle 80 and the fourth and fifth detents 84 and 85 are rotatably coupled by an arrow of the detent 86 within the slots 81. Here, the fourth and fifth detents 84 and 85 have a triangular shape with two cut ends (see Fig. 10) and diagonally connected to one another by elasticity of a detent spring 87 (see Fig. 1). Also, four grooves 83 are formed in the inner wall of the third vehicle 80 parallel to an axis of the third vehicle 80. In the third vehicle 80 having the above shape, the fourth detents 84 engage with the fourth star 72 of the wheel. star 70 and the fifth detents 85 are coupled with the fifth star 54 of the second ring gear 50. Also, slots 83 formed in the inner wall of the third vehicle 80 are placed on each tab 91 of a drive wheel 90. Here, the width of the grooves 83 becomes wider twice or more than that of the tongue 91 (see Fig. 10). The third vehicle 80 connected to the peripheral parts as a power distributor, transmits the clockwise power received from the drive wheel 90 to the second ring gear 50 using the fifth detents 85 and the fifth star 52, and the counter-clockwise power received from the drive wheel 90 to the star wheel 70 using the fourth detents 84 and the fourth star 72. The drive wheel 90 of the power shift apparatus will now be described with reference to Figs. 1, 2, 9A to 9C. The drive wheel 90 having a hollow cylindrical shape has four tabs 91 on the outer portion of the left side, two holes 92 through which a pin 98 passes are formed in the circumference of the left side and the openings 93 are formed in the circumference of the right side. Here, the driven sprocket 94 is tightly connected to the openings 93. In the drive wheel 90 having the above shape, the tabs 91 are located below the fourth detents 84 and the fifth detents 85 of the third vehicle 80. Consequently , the drive wheel 9 selectively transmits the power of the section II of APBD according to the direction of rotation of the drive gear 94. On the other hand, as shown in figures 1 and 2, a key holder 95 to hold the second key 96 is located below the left side of the drive wheel 90 and the second key 90 is screwed to the middle portion is connected screwed to one end of the bolt lever 4. The outer side of the key holder 95 is tapering to the right to control the up and down movements of bolt 98 slidably inserted with holes 92 of drive wheel 90. That is, when the bolt lever 4 is removed, the key holder 95 is changed to the right, raising the bolt 98. Meanwhile, the key holder 95 is changed to the initial location when the grip of the lever is released. pin 40, thus returning pin 98 to the initial location. For the last moment, the shaft cover 100 of the power changing apparatus has a hollow cylindrical shape with multiple passages as shown in Figures 1 and 2. The first and second stars 101 and 102 are formed on the inner walls of the side left and the middle portion thereof, respectively. The cover of the shaft 10 drives a rear wheel of the bicycle receiving power from the first ring gear 30 (medium or high speed) of the first vehicle (slow speed). Also, the shaft cover 10 functions as a housing to protect the parts used in the power changing apparatus of the present invention. The right end of the shaft cover 10 is enclosed by the cover 103. In Figures 1 and 2, the reference numeral 6 represents nuts for tightly connecting the power changing apparatus of the present invention to the shaft 10 arrow and the reference number 7 represents bearings for evenly rotating the power changing apparatus. An operative effect of the power changing apparatus according to the present invention having the structure described above will be described below. The power shifting apparatus of the present invention controls the power rotation direction simultaneously an input to power output ratio so that the operational effect of the power shifting apparatus will be described by classifying the power direction applied in the directions clockwise and counterclockwise. First, the case where the power is applied in the clockwise direction will now be described. Here, after describing the process until power is applied to section II of APBD, the process of changing speed in the first stage (low speed), second stage (medium speed) and third stage (high speed) will be described in sequence First, when the power is applied to the power changing apparatus clockwise, ie the driven gear 94 rotates clockwise, the driving wheel 90 formed integrally with the wheel The driven gear 94 also rotates clockwise in cooperation with the driven gear 94. Here, as shown in FIG. 10A, the tabs 91 of the drive wheel 90 raise the fourth detents 84 (expressed by a dotted line) of the third vehicle 80. As a result, the fourth detents 84 are released from the fourth star 72 of the star wheel 70 and simultaneously the fifth detents 85 (expressed by a line solid) of the third vehicle 80, which does not rise, engages with the fifth star 53 of the second ring gear 50 by the elasticity of the retainer spring 87 (see Fig. 1). Therefore, the drive wheel 90, the third vehicle 80 and the second ring gear 50 rotate integrally in the clockwise direction. The power applied in the clockwise direction reaches the second ring gear 50 without changing the direction thereof and is then transmitted to the transmission section I to change the rotation speed in the first, second and third stages. The process in which the rotation speed is changed to the first stage by the transmission section I will now be described with reference to Figure 11. As a precondition for obtaining the rotation speed of the first stage, one end of the second detents 33 of the first ring gear 30 should be raised by the third grooves 41 of the clutch 40 by pulling the lever 3 to release the second detents 33 of the second star 102 of the shaft cover 100. Here, the other end of the lever 3 it pushes on the right based on the principle of a lever that centers the fixing bolt 8 installed on the shaft 10 arrow when one end of the lever 3 is pulled, so that the clutch 40 is changed to the right as shown in FIG. Fig. 11. Consequently, the clutch key 44 in contact with another end of the lever 4, the fastening ring 43 and the clutch ring 45 are pushed in cooperation with each other, thereby changing the clutch 40 on the right. At the rotational speed of the first stage, the power is transmitted to the second ring gear 50, the first ring gear 30, the first vehicle 20 and the shaft cover 100 in sequence as shown in Fig. 11. When the power is transmitted from the first gear of rings 30 to the planetary gears 22 of the first vehicle 20, the speed of rotation is reduced. Here, a speed reduction ratio depends on a gear ratio and the principle of the same is the same as a means to change the overall speed. The process in which the rotation speed is changed in the second stage by the transmission section I will now be described with reference to Fig. 12. As a precondition for obtaining the rotation speed of the second stage, the third grooves 41 of the clutch 40 should be located behind the second detents 33 of the first ring gear 30 by pulling the lever 3 in half. Consequently, the power applied for the second ring gear 50 is transmitted only to the first ring gear 30, not to the first vehicle 20. While, since the clutch 40 does not reach the second detents 33, the second detents 22 of the first gear of ring 30 are coupled with a second star 102 of the shaft cover 100. At the speed of rotation from the second stage, power is transmitted to the second ring gear 50, the first ring gear 30 and the shaft cover 100 in sequence as shown in Fig. 12. When power is applied from the first ring gear 30 and then transmitted to the shaft cover 100, the application of power and transmission speeds are equal to each other due to the same proportion of gears Hence, although the first vehicle 20 coupled with the first ring gear 90 rotates in cooperation with the first ring gear 30, power can not be transmitted to the shaft cover 100 since the first vehicle 20 rotates at the reduced speed. The process in which the rotation speed is changed to the third stage by the transmission section I will now be described with reference to Fig. 13. As a precondition for obtaining the rotation speed of the third stage, the third grooves 41 of the clutch 40 must be coupled with the third grooves of grooves 24 of the first vehicle 20 while the lever 3 maintains the initial state without movement.

At the rotational speed of the third stage, the power is transmitted to the second ring gear 50, the clutch 40, the first vehicle 20, the first ring gear 30 and the shaft cover 100 in sequence as shown in Fig. 13 The power applied from the second ring gear 50 is transmitted directly to the first vehicle 20 via the clutch 40 bypassing the first ring gear 30 since the speed of rotation increases when the power is transmitted from the first vehicle 20 to the first gear of ring 30 That is, since the first ring gear 30 rotates faster than the second ring gear 50, the third oil seals 55 do not engage with the third star 32 Second, when the power is applied to the power change apparatus in the counterclockwise direction, the process for transmitting the power to section II of APBD will now be described. In this case, the driven gear 94 rotates in the direction counterclockwise, the drive wheel 50 formed integrally with the drive sprocket 94 also rotates counterclockwise in cooperation with the drive sprocket 94 Here, as shown in Fig 10B , the tongues 99 of the drive wheel 90 elevates the fifth detents 85 (expressed by a solid line) of the third vehicle 80. As a result, the fifth detents 85 are released from the fifth star 54 of the second ring gear 50 and simultaneously the four detents 84 (expressed by a dotted line) of the third vehicle 80 that does not rise is coupled with the fourth star 72 of the star wheel 70 by the elasticity of the retaining spring 87 (see Fig. 1). Therefore, the drive wheel 90, the third vehicle 80 and the star wheel 70 rotate integrally in the counter-clockwise direction. When the power applied from the driving wheel 90p in the counterclockwise direction reaches the star wheel 7 without changing the direction thereof, the star wheel 70 transmits the power to the small gears of the two planetary gears of two stages of the second vehicle 60. Here, the two-stage planetary gears 63 change the direction of rotation of the power clockwise as they rotate by centering their own axis so that the power is transmitted to the second gear. of ring 5 via the large gears of two-step planetary gears 63. Therefore, the direction of rotation of the power applied to the drive wheel 90 in the counter-clockwise direction is changed in the clockwise direction of the watch via the star wheel 70 and the second vehicle 60, so that the second ring gear 50 rotates in the clockwise direction. The process for transmitting the power to the transmission section I after the power is transmitted to section II of the PABD is the same as when power is applied from the drive wheel 0 in the clockwise direction. In the two-stage planetary gears 63 used in the power shift apparatus according to the present invention, a ratio in diameter of each pair gear forming the two two-stage planetary gears 63 is controlled so that the transmission speed The power of the second vehicle 60 to the second ring gear 50 must be constant. However, the ratio in diameters of the large small gears of the two-stage planetary gears 63 can be varied if required, to increase or decrease the rotation speed in section II of the APBD. Therefore, the speed of rotation can be controlled with several speeds in combination with the change of speed in three stages in the transmission section I. Third, the process of power transmission of the power changing apparatus during the slow running of the driving wheel 90 will be described with reference to Fig. 10C. Slow running of the drive wheel 90 is possible only when the power is applied in the counterclockwise direction and the power is transmitted in the same manner as before when power is applied in the clockwise direction. As a precondition for the slow running of the drive wheel 90, the bolt 98 (see Figs 1 and 2) should rise from the holes 92 formed as the circumference of the left side of the drive wheel 90 by pulling the bolt lever 4. The state is shown in Fig. 10C, which is the same as Fig. 10B unlike the fourth detents 84 are also raised by bolt 98. This state means that both the fourth and fifth detents 84 and 85 of the third vehicle 80 are released from the fourth and fifth stars 72 and 54 , respectively. Consequently, the power of the drive wheel 90 can not be transmitted to the section II of the APBD, so that the drive wheel 90 goes at a slow pace. Further, as shown in Fig. 1, a ring 88 for holding the third vehicle 80 is inserted between the third vehicle 80 and the star wheel 0 to prevent rotation of the third vehicle 80 when the driving wheel 90 rotates in the counter-clockwise Industrial Applicability As described above, the power changing apparatus of a bicycle axle according to the present invention allows to freely change the direction and speed of the applied power by controlling the levers. The present apparatus has excellent compatibility for the parts of the conventional bicycle, so that the present apparatus can be easily attached to the conventional bicycle. Also, the present apparatus can drive the bicycle forward at all times regardless of the direction of the power applied to it and also allows slow travel if required when pedaling backward like the general bicycle. In addition, the speed of the applied power can be changed in three stages. Here, the change of speed in three stages or more is possible by partially exchanging the parts included in the apparatus.

When a cyclist drives a bicycle to which the present apparatus is attached, the cyclist's muscle in the legs can develop in balance and the energy applied simultaneously to the pedals can be used effectively. Also the present apparatus is a multi-use bicycle apparatus in which all parts of the present apparatus are included herein, providing high safety and convenience to handle. In addition, the accuracy of the parts and efficiency of rotation, resistance and operational reliability are improved by increasing the accuracy of the parts.

Claims (12)

1. CLAIMS 1. A power changing apparatus of a bicycle axle including a transmission section adopting a plurality of planetary gears, comprising: a shaft arrow to support all the constituents as a central arrow of said power shift apparatus, having an end connected to the transmission means, a middle portion connected to the connection means and the end control to the means of the bidirectional pedaling apparatus (APBD); transmission means for changing the power applied from the connecting means and APBD means in multiple stages and transmitting the resulting power to a shaft cover; connecting means for receiving the power of the APBD means and transmitting the received power to said transmission means; APBD means to change the power direction applied from the input means clockwise or counterclockwise in the clockwise direction to transmit the power with changed direction to said transmission means and blocking the power applied from the input means in the counter-clockwise direction depending on the circumstances; input means for supplying the power generated from a pair of pedals to said APBD means; and a shaft cover installed around said shaft arrow, for protecting said transmission means, such connection means and the aforementioned APBD means as a housing and simultaneously driving a bicycle receiving power from said transmission means. A power changing apparatus according to claim 1, wherein said shaft arrow has a hollow cylindrical shape with multiple stages and a thread portion, a first groove and a second pin hole and another portion of rope is form from the left the right of said shaft arrow. 3. A power changing apparatus according to claim 1, wherein said transmission means comprises: a first solar gear formed integrally in the left portion of said shaft arrow without being rotated; a first vehicle in a hollow cylindrical shape, having at least one or more openings in the outer circumference of the left side, in which the same number of first stops is installed as that of the openings, in which the same number of gears planetary that of the holes are installed rotatably in the same direction as that of the arrow shaft by centering each arrow of the planetary gears and third grooves of grooves in the inner portion of the right side, where the first detents are coupled with a first of said shaft cover, the inner side of the planetary gears are coupled with said first solar gear and the third grooves of grooves are coupled with third grooves of said connection means; and a first gear in a hollow cylindrical shape, with a first gear in the inner wall of the left side, at least one or more holes in the circumference thereof in which the second detents are elastically installed by a spring, and a third star on the inner wall of the right side, where the first gear engages the outer side of the planetary gears and the outer side of the second seals engage with said shaft cover and internal seal of the second seals engage with said connecting means and the third star is coupled with third detents of a second ring gear. 4. A power changing apparatus according to claim 3, wherein the number of planetary gears of said first vehicle is four. 5. A power changing apparatus according to claim 3, wherein the second detents of said first ring gear has a boomerang shape. 6. A power changing apparatus according to claim 1, wherein said connecting means in a hollow cylindrical shape are formed of a clutch having third grooves having a plurality of inclined tongues in the outer portion of the left side, two holes piercing the circumference thereof and four projections in the outer portion on the right side, where the third grooves are coupled with the third grooves of grooves of said first vehicle and four projections are slidably connected to the grooves of a second ring gear. 7. A power shifting apparatus according to claim d, wherein said transmission means changes the rotation speed while the location of said clutch is controlled by a lever installed on said shaft arrow. A power changing apparatus according to claim 1, wherein said APBD means comprises: a second ring gear having at least one or more openings in the circumference of the left side to which the third detents are inserted , at least one or more notches in the inner portion of the left side, a second meshing in the inner wall of the middle portion and a fifth star in the inner wall of the right side, where the third detents engage with the third star , the notches are slidably connected to the projections of said clutch, the second gear engages with a plurality of two-stage planetary gears and the fifth star is coupled with fifth detents; a second vehicle in a hollow cylindrical shape, having a nut hole in the circumference of the left side second slots of wedges in the inner portion of the left side, at least one or more holes in the circumference in which the planetary gears of two stages are rotatably fixed by each corresponding planetary gear arrow, wherein said second vehicle is connected to the second groove of said shaft arrow and integrally connected to said shaft arrow by inserting a bolt into the nut hole, the small gears of the two-stage planetary gears are coupled with a second solar gear and the large gears of them engage with the second gear; a star wheel in a hollow cylindrical shape with multiple stages, having a second sun gear on the left side and a fourth star on the inner wall of the right side, wherein said star wheel is rotatably fixed around said shaft arrow so that the fourth star is coupled with fourth checkpoints of a third vehicle; and a third vehicle in a hollow cylindrical shape, having two grooves in the circumference in which the fourth and fifth detents are rotatably coupled by a detent arrow and at least one or more grooves in the inner wall, wherein the fourth detents they are coupled with the fourth star, the fifth detents are coupled with the fifth star and the grooves formed in the internal wall are placed on each tongue of a drive wheel. A power changing apparatus according to claim 1, wherein said input means in a hollow cylindrical shape is formed of a drive wheel having the same number of tabs as the slots formed in the internal wall. of said third vehicle in the external portion of the left side, the holes through which a bolt passes in the circumference of the left side and openings in the circumference of the right side to which a drive sprocket is hermetically connected, where the tongues are located under the fourth detents and the fifth detents of said third vehicle. A power changing apparatus according to claim 9, wherein a but in said drive wheel is inserted to push the four detents. 11. A power changing apparatus according to claim 10, wherein the bolt is controlled up and down by a bolt lever. 12. A power changing apparatus according to claim 1, wherein said shaft cover in a hollow cylindrical shape with multiple stages, having a first star in the inner wall of the left side and a second star in the middle portion, where the first star is coupled with the first checkpoints and the second star is coupled with the second checkpoints.