JP2969378B2 - Bicycle power direction changing device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a bicycle power direction changing device, and more particularly to a bicycle power direction changing device.
Attached to the bicycle pedal axle hub, when the bicycle pedal is stepped forward or backward, the bicycle can always run forward by controlling the switch lever, and when the conventional bicycle pedal is depressed backward. For example, the present invention relates to a power direction changing device capable of causing the bicycle to idle when necessary when stepping backward on a bicycle pedal.

BACKGROUND ART Generally, a bicycle includes front and rear wheels provided in front and behind a vehicle frame, and a pair of pedals provided as a power source between two wheels. The driving force of the bicycle is obtained by stepping on the pedal, and then the driving force is transmitted to the rear wheels via the driving sprocket, the chain and the driven sprocket. In such a general bicycle, when the rider steps forward on the pedal, the bicycle runs forward, and when the pedal is stepped backward, the rear wheel of the bicycle rotates without load by a one-way ratchet of the rear wheel hub, and thereafter, the bicycle rotates. The no-load rotation of the wheel is called "idling".

Also disclosed is an invention of a new bicycle component that allows a general bicycle that can only be pedaled in one direction to be pedaled in both directions. Especially Ma
The invention of ntzoutsos et al. and the invention of Foster et al. are introduced below.

Invention of Mantzoutsos et al. (European Patent Publication No. 0,369,925)
According to this, two gears are mounted on a pedal shaft, and an auxiliary gear is detachably mounted between the two gears. As a result, the bicycle of the present invention can run in the same manner as a general bicycle when the pedal is depressed with the auxiliary gear removed. However, if the pedal is depressed backward with the auxiliary gear attached, the bicycle can travel forward because the rotation direction of the pedal shaft is changed by the auxiliary gear.

On the other hand, according to the invention of Foster et al. (US Pat. No. 5,435,583), two gears and two gears arranged between these gears are used.
A gearbox containing one clutch and a bevel gear located between the teeth of the two gears is mounted on the pedal shaft. Thus, the bicycle of the present invention can run in the same manner as a general bicycle when the pedal is depressed when the clutch is connected to the right gear. However, if the pedal is depressed backward while the clutch is connected to the left gear, the bicycle can travel forward because the rotation direction of the pedal shaft is changed by the bevel gear.

The above two inventions adopt an intermediate gear,
This is significant in terms of a bidirectional pedal drive that can drive the bicycle forward when the pedal is depressed backwards. However, the life of this bi-directional pedal drive is reduced due to wear of certain parts to which the force required to change the direction of power is applied, which is inconvenient for operating the power redirector.

A bidirectional pedal drive obtained by overcoming the above drawbacks is disclosed in Korean Patent Application No. 94-13391. According to this application, a predetermined closed space is formed between one end of the pedal shaft and the driving sprocket, and two one-way ratchets are attached to an outer portion and an inner portion of this space. In addition, a pawl in which a plurality of planetary gears are rotatably arranged, and a switching lever for controlling fixing and releasing of the outer one-way ratchet are provided in the space. The bidirectional pedal drive mechanism of the bicycle in this bidirectional pedal drive device is as follows.

When the pedal is depressed forward, the pedal, the ratchet, and the drive sprocket rotate integrally to cause the bicycle to travel forward. On the other hand, when the pedal is depressed backward, the switching lever causes the outer one-way ratchet to function instead of the inner one-way ratchet. Here, there are two cases: a case where the outer ratchet is fixed and a case where the outer ratchet is released.
First, when the pedal is depressed backward when the outer ratchet is fixed, the plurality of planetary gears rotate around their own axes, changing the direction of rotation of the pedal axle, thereby causing the pedal axle to rotate. Is transmitted to the driving sprocket, and the bicycle is driven forward. Second,
If the pedal is depressed backward when the outer ratchet is unlocked, the planetary gears revolve around the pedal axis while cooperating with the ratchet while simultaneously rotating. Therefore, the power from the pedal shaft cannot be transmitted to the drive sprocket,
As a result, the pedal idles.

According to Korean Patent Application No. 94-13391, concentration of a force on a specific portion by changing the direction of power is prevented by dispersing the force using a plurality of planetary gears. For this reason, the life of the bidirectional pedal drive is prolonged, and the rotation direction of the pedal shaft can be easily changed by using the switching lever. The bidirectional pedal drive can also operate actively by employing small precision components.

However, in Korean Patent Application No. 94-13391, mass production of parts and assembly of each part are difficult, and this bidirectional pedal drive cannot be directly attached to a conventional bicycle. Parts must be partially improved. Furthermore, each component is
It can be damaged by the reverse load that occurs when the bicycle is pulled backwards.

DISCLOSURE OF THE INVENTION As an improvement over the invention of Korean Patent Application No. 94-13391, an object of the present invention is to improve the shape of each component to make it suitable for simplifying the manufacture and assembly of this component. Bicycle power that enables large-scale production, and that can be directly attached to conventional bicycles by modifying parts and employing auxiliary means, and at the same time prevent damage to parts caused by reverse loading It is to provide a direction change device.

A power direction changing device according to the present invention includes a pedal axle, a rear wheel, a drive sprocket formed on the pedal axle and rotating together with the pedal axle, a driven sprocket for transmitting a driving force of the drive sprocket to the rear wheel, Includes basic bicycle components such as chains connecting sprockets and driven sprockets. A basic feature of the present invention is a "power changing device" formed in a closed space between a pedal shaft and a driving sprocket. Here, the shape of the components used to construct the power direction changing device is a hollow cylindrical shape, an annular shape, or a gear shape.

The power redirector of the present invention is disposed between the pedal axle and the drive sprocket, and roughly includes a shaft housing, a switching ring, a carrier, a sun gear, and a sprocket cap. The function of each component is as follows. A shaft housing for receiving the switching ring, the carrier and the sun gear supports the rotating pedal shaft and at the same time a plurality of openings formed inside the edge of the right side cap of the shaft housing when the pedal is depressed backward. The carrier is controlled by using a plurality of claws inserted into and removed from the carrier. The switching ring inserts and removes the pawl from the shaft housing when the pedal is depressed rearward, and has a ratchet on the outside and inside of its left part, and a plurality of planetary gears rotatably arranged on the right part. Carriers that have
Maintain or change the direction of power from the pedal shaft, thereby transmitting power to the drive sprocket. The sun gear transmits the driving force of the pedal shaft to the carrier when coupled to the pedal shaft. The sprocket cap, which has a gear on the right inside its own edge, is powered by the carrier and keeps the bicycle running forward regardless of whether the pedal is driven backward or forward.

Accordingly, when the pedal is stepped forward and backward while the power direction changing device is mounted on the bicycle, the bicycle travels forward. The power redirection device of the present invention as one of the "two-way pedal drives" differs from the conventional two-way pedal drive in components and operating mechanism. In addition, according to the power direction changing device of the present invention,
The shape of each component is optimized, so that the concentration of the load on a specific part is prevented. Also, all components are formed integrally, which simplifies the assembly process of the components. The power diverting device employs a switching lever to facilitate operation of the device and an auxiliary ring for attaching the power diverting device to a conventional bicycle without modification of the conventional bicycle. .

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view of a bicycle power direction changing device according to the present invention.

FIG. 2 is an exploded perspective view of the power direction changing device according to the present invention.

FIG. 3 is a right side view showing an example of a sun gear used in the power direction changing device according to the present invention.

FIG. 4A is an operational diagram of the power-direction changing device along line AA in FIG. 1 when the switching ring has disengaged the first pawl from the opening of the shaft housing, and FIG.
FIG. 4 is an operation diagram of the power-direction changing device along line AA in FIG. 1 when the switching ring prevents the first pawl from coming out of the opening of the shaft housing;

FIG. 5 is a cross-sectional view of the power direction changing device taken along line BB in FIG. 1;

FIG. 6 is a sectional view of a power direction changing device according to a preferred embodiment of the present invention.

FIG. 7 is a right side view of a shaft housing used in the power direction changing device shown in FIG.

FIG. 8 is a left side view of a carrier used in the power direction changing device shown in FIG.

FIG. 9 is a left side view of a sprocket cap used in the power direction changing device shown in FIG.

FIG. 10 is a right side view of a switching ring control means according to another embodiment of the present invention.

FIG. 11 is a sectional view when a power direction changing device according to still another embodiment of the present invention is mounted on a conventional bicycle.

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail with reference to FIGS.

As shown in FIGS. 1 and 2, the shaft housing 30, the switching ring 40 and the carrier 50 and the sun gear 60 and the sprocket cap 70 are connected to each other by attaching a fixing nut 90 to the outside of the sprocket cap 70. Combined sequentially on the pedal shaft 20 to form an integral power redirector. The structure and function of each component of this device will be described in order.

The shaft housing 30 supports the rotary pedal shaft 20, has a plurality of openings 31 inside the edge of the right cap of the shaft housing 30, and a plurality of first claws 32 are inserted into these openings. Is done. The hole 33 into which the first gear 81 for controlling the switching ring 40 fits is formed in the side wall of the right cap. The shaft housing 30 having the above structure includes a switching ring 40, a carrier 50, and a sun gear 60.
And a first pawl arranged on the edge of the shaft housing 30 when the pedal is depressed backward.
The use of 32 has a function of rotating the carrier 50 or preventing the carrier 50 from rotating. in this case,
A spring is inserted between the shaft housing and the first pawl 32 to elastically retain the first pawl 32 in the opening 31.

The switching ring 40 has on one side thereof a second gear 41 near the pedal shaft and a plurality of holes 42 on its face. This second gear 41 is the first gear
Engagement with 81 causes rotation of the switching ring 40, said hole 42 being for allowing the first pawl 32 to protrude or retract. The carrier 50 becomes non-rotatable when the first pawl 32 is fitted in the hole 42 and the switching ring 40 is
When the carrier 32 is sealed in the opening 31 of the shaft housing 30, the carrier 50 can rotate.

The carrier 50 has a hollow cylindrical shape and has a first ratchet 51 and a second ratchet 52 on the outside and inside of the left portion, respectively, and a ring having a plurality of holes on the right portion of the carrier 50. The right portion is integrally connected to the left portion so that the plurality of planet gears 54 are rotatably disposed by the planet gear shaft 55 in the ring 53. The first ratchet 51 of the carrier 50 having the above structure is engaged with the first pawl 32 of the shaft housing 30, and the second ratchet 52 is engaged with the second pawl 62 of the third gear 61 described later. . On the other hand, the inner part of the planet gear 54 of the carrier 50 is engaged with the third gear 61 of the sun gear 60, and the outer part of the planet gear is a sprocket
It engages with a fourth gear 71 formed inside the cap 70.

The carrier 50 serves to transmit the power from the pedal shaft 20 to the sprocket cap 70 by maintaining or changing the direction of the power from the pedal shaft 20, which is the most important point in the present invention. . The planetary gears 54 of the carrier 50 disperse the force concentrated on a specific portion by changing the direction of the power. Preferably, the number of the planetary gears is eight.

The sun gear 60 has a stepped hollow cylindrical shape, and the small diameter left portion of the sun gear 60 has a plurality of openings 63 on which the second pawls 62 are arranged, outside thereof, The inside of the left part has a hexagonal spline-shaped central opening such that the left part is integrally fixed to the pedal shaft 20. The large-diameter right portion of the sun gear 60 has a third gear 61 on its outside. In the sun gear 60 having the above structure, the second pawl 62 is engaged with the second ratchet 52 of the carrier 50, and the third gear 61 is engaged with the planet gear 54 of the carrier 50. Here, the number of the second claws is preferably four.

In this case, the first and second claws are formed by the following method.
32 and 62 can be made elastic. First, insert a coil spring or leaf spring under the pawl. Second
Then, as shown in FIG. 3, a step is formed on each pawl at a predetermined angle, and then each pawl is connected by an annular spring 65 to apply linear tension.

Furthermore, according to the invention, the first pawl 32 and the switching ring 40 are arranged outside the carrier 50 and control the carrier 50 only when the pedal shaft 20 rotates in the reverse direction.
Also, the second pawl 62 is disposed outside the sun gear 60,
The carrier 50 is rotated in one direction during the forward rotation.

Since the sun gear 60 is integrally engaged with the pedal shaft 20, the sun gear 60 transmits power from the pedal shaft 20 to the carrier 50 while rotating in the same direction as the rotation direction of the pedal shaft 20.

The sprocket cap 70 has a fourth gear 71 inside its edge on the right side of FIG. 1 and a plurality of screws or brackets 72 outside the edge to form a multi-step drive sprocket. 73 is connected to the bracket. Bearing 74 is a sprocket cap
Fixed to the center of 70, sprocket cap 70 is free to rotate independently of pedal shaft 20. The fourth gear 71 of the sprocket cap 70 having the above-mentioned structure is engaged with the planet gear 54 and thus receives the power from the pedal shaft 20 via the carrier 50.

The sprocket cap 70 always rotates in the forward direction regardless of the rotation direction of the pedal shaft 20.

Furthermore, the reference numerals 10, 11, 21 and 22 in FIG. 1, which are not described above, denote a frame, a pedal shaft hub, a bearing and a washer, respectively.

When the shaft housing 30 is coupled with the sprocket cap 70 on the bicycle pedal shaft 20, a closed space is formed therebetween, and the switching ring 40, the carrier 50, and the sun gear 60 engage with each other in this closed space. And the locking nut 90 is mounted on the outside of the sprocket cap 70, thus forming an integral power redirector.

This integrated power changing device is assembled in the following procedure. First, the pedal shaft 20 is rotatably disposed within the shaft housing 30, and then the switching ring 40, carrier 50, sun gear 60, and sprocket cap 70 are centered about the pedal shaft 20 within the shaft housing 30. Are assembled in order. Then fix the nut 90
Is attached to the outside of the sprocket cap 70,
Thus, an integrated power direction changing device is obtained.

Further, a switching lever 80 for controlling the switching ring 40 is disposed on the side wall of the shaft housing 30, and the first gear
Connected to 81. As a result, the switching lever 80 is moved to the first position.
The switching ring 40 is moved using the movement of the gear 81.

The operation and effect of the power direction changing device according to the present invention having the above structure will be described below.

For convenience of explanation, the operation methods are classified into "forward traveling by depressing the pedal forward", "forward traveling by depressing the pedal backward", and "idling by depressing the pedal backward". The operation of the present invention will be described.

First, "forward running by depressing the pedal forward" means that the pedal shaft 20 is driven clockwise as shown in FIGS. This is the direction when viewed from the right with respect to the direction, which also applies to the following description), which means that the bicycle travels forward. In this case, the power from the pedal shaft 20 is transmitted as follows.

When the pedal shaft 20 is driven clockwise, the sun gear
The 60 rotates clockwise in cooperation with the pedal shaft 20.
Here, since the second pawl 62 is engaged with the second latch 52, the carrier 50 rotates in the same direction as the pedal shaft 20. Therefore, the planetary gear 54 itself does not rotate, and the fourth sprocket cap 70 engaged with the planetary gear 54 does not rotate.
Gear 71 rotates clockwise. In this way, the pedal shaft 20 and the sprocket cap 70 rotate in the same direction as each other, so that the bicycle travels forward.

Second, "forward running by depressing the pedal backward" means that the bicycle runs forward when the pedal shaft 20 is driven counterclockwise. in this case,
Power from the pedal shaft 20 is transmitted as follows. For this operation, the first pawl 32 and the first latch 51 must be engaged with each other by controlling the switching ring 40 as shown in FIG. 4A.

When the pedal shaft 20 is driven counterclockwise, the sun gear 60 rotates counterclockwise in cooperation with the pedal shaft 20. Here, since the second pawl 62 slides over the second latch 52, power cannot be transmitted to the carrier 50. On the other hand, as shown in FIG. 5, the third gear 61 of the sun gear 60 transmits power to the planet gear 54 engaged with the sun gear 60 so that the planet gear 54 rotates clockwise. To rotate. In this case, the rotation of the planet gear 54 provides a force to rotate the carrier 50 that is integrally connected to the planet gear 54. However, career 50
Means that the first pawl 32 is a carrier as shown in FIG. 4A.
Since it is engaged with the first ratchet 51 of 50, it cannot rotate counterclockwise. This causes the sprocket cap 70 engaged with the planetary gear 54 to rotate clockwise while only the planetary gear 54 rotates as shown in FIG. By this operation, the direction of the driving force applied to the pedal shaft 20 in the counterclockwise direction is changed by the power direction changing device of the present invention, and thus, the sprocket cap 70 rotates clockwise.

Third, "idling by depressing the pedal backward" means that when the pedal shaft 20 is driven counterclockwise,
This means that the power cannot be transmitted to the sprocket cap 70 so that the bicycle cannot run and only spins. For this operation, the first pawl 32 of the shaft housing 30 and the first ratchet 51 of the carrier 50 are controlled by controlling the switching ring 40 as shown in FIG.
Must be disengaged.

In this case, the power transmission process for the operation is such that the carrier 50 itself rotates around the pedal shaft 20, while the planetary gear 54 has the first pawl 32 with the first ratchet.
Since it does not engage with 51, except that it rotates, the process of “forward running by depressing the pedal backwards” is the same as the process until the counterclockwise force is applied to the carrier 50 by the planetary gear 54. is there. Thus, the pedal shaft
Since the power from 20 is transmitted only to the carrier 50 and not to the sprocket cap 70, the bicycle cannot run.

The slipping caused by depressing the pedal backward in a general bicycle is different from the "slipping caused by depressing the pedal backward" by the power direction changing device of the present invention in the following points. That is, in idling caused by stepping backward on a pedal in a general bicycle, the drive sprocket and the chain rotate in reverse in cooperation with the pedal shaft. However, in the present invention, the drive sprocket and the chain do not rotate.

As described above, the device of the present invention as one of the "bidirectional forward traveling devices" transmits power in a manner different from the conventional device by employing new components. In addition, since the shape of each component is optimized, concentration of a load on a specific portion can be prevented. Furthermore, since each component is integrated, assembly can be performed easily. In addition, as described in the following embodiments of the present invention, the lever is attached to simplify the operation of the device, and the structure of the shaft housing is improved so that it can be directly attached to a conventional bicycle. .

Based on the above-mentioned present invention, the first and second aspects of the present invention are described below.
A third specific example will be described. In the first specific example, the positions of the one-way ratchet used for forward rotation and the ratchet for controlling reverse rotation are changed from each other. In a second embodiment, the switching lever is replaced by a wire. further,
In a third embodiment, the shape of the shaft housing is improved so that the power diverter can be mounted directly without modifying a conventional bicycle.

Embodiment 1 Referring to FIGS. 6 to 9, the basic feature of this specific example is that the positions of a one-way ratchet used for forward rotation and a ratchet for controlling reverse rotation are moved.
That is, the position of the ratchet used for forward rotation is moved from inside the carrier to the outside, while the position of the ratchet used to control reverse rotation is moved in the opposite direction.

To move the positions of the two ratchets, each component is manufactured with a different shape than that of the invention described above. However, the number of components is the same as that of the present invention, and the operation is the same as that of the present invention. The improved part shape is described below.

As shown in FIGS. 6 and 7, the shaft housing 130 has a hollow cylindrical projection on its right and a plurality of openings 131 on its outside, and a plurality of openings 131 in these openings. A third pawl 132 is inserted. The shaft housing 130 can be obtained by removing the disc-shaped side wall and the edge of the shaft housing 30 so that the shaft housing 130 can be obtained at a position closer to the pedal shaft 120 than the hole 33 of the present invention. And a hole 133 for receiving one gear 81.

The switching ring 140 of the present embodiment differs from the switching ring 40 of the present invention in that a fifth gear 141 is formed on one side of the switching ring 140 toward the outside of the pedal shaft 120. The switching ring 140 includes a third pawl 132 and a carrier 150.
And the third ratchet 151.

As shown in FIGS. 6 and 8, the carrier 150 of this embodiment has a plurality of openings 153 into which a plurality of fourth claws 152 are inserted, outside the left portion of the carrier 150, and a third ratchet. 151 inside the left part. In addition, carrier 150
Is the same as that of the carrier 50 of the present invention. In the carrier 150 having the above structure, the fourth pawl 152 is the fourth ratchet of the sprocket cap 170.
172 and the third ratchet is the shaft housing 1
Engage with 30 third pawls 132.

The sun gear 160 of this specific example has an inside fixed to the pedal shaft 160 and an outside having a sixth gear 161 that engages only with the plurality of planetary gears 154.

Furthermore, as shown in FIGS. 6 and 9, the sprocket cap 170 has a seventh gear 171 to the right inside the edge of FIG. 6 and a fourth ratchet 172 to its left. Thus, the seventh gear 171 is engaged with the planet gear 154 of the carrier 150, and the fourth ratchet 172 is
Engages with the fourth pawl 152.

The other parts are the same as those of the present invention. 6 to 9, reference numeral 110 denotes a vehicle frame.
Reference numeral 111 represents a pedal shaft hub, and reference numeral 153.
Represents a carrier ring, reference numeral 155 represents a planetary gear shaft, and reference numeral 173 represents a sprocket bracket.

The operation and effect of this embodiment having the above structure will be described below.

First, "forward traveling by depressing the pedal forward" is performed by the following mechanism. As the pedal shaft 120 rotates clockwise, the sun gear 160 rotates in the same direction as the pedal shaft 120, and the planetary gear 154 rotates counterclockwise. However, the carrier 150 itself rotates clockwise at a different rotation speed than the rotation speed of the pedal shaft 120, and the fourth pawl 152 of the carrier 150 engages with the fourth ratchet 172 of the sprocket cap 170, Thus, the sprocket cap 170 is rotated clockwise.

Next, "forward running by depressing the pedal backwards"
After the third pawl 132 is released from the hole of the switching ring 140 by the switching ring 140, the shaft housing 130
The third pawl 132 of the carrier 150 is the third ratchet 151
This is performed when engaging with. That is, the forward running by depressing the pedal backward is performed when the carrier 150 is fixed. Thus, the planetary gear 154 changes the direction of power from the sun gear 160 while rotating around its own shaft, thereby supplying power to the sprocket cap 170 clockwise.

Finally, "slip by stepping on the pedal backwards"
Is performed by the following mechanism. Switching ring 140
Prevents the third pawl 132 from being released from the opening of the shaft housing, and moves the carrier 150 to the pedal shaft 120.
Rotate in the same direction as. As a result,
Power from sun gear 160 cannot be transmitted to sprocket cap 170.

Embodiment 2 A second specific example of the present invention relates to control of the switching ring 40.

The switching ring 40 of the present invention includes a shaft housing
The first pawl 32 is released and blocked by using a first gear 81 (see FIGS. 1 and 2) formed on the side wall of 30. In order to control the first gear 81 formed in the shaft housing 30, the shaft housing 30 should be drilled to form a hole 33, through which the switching lever 80 should be mounted from the outside. When the switching lever 80 is rotated back and forth, the first gear 81 rotates in cooperation with the switching lever, and the switching ring 40 engaged with the first gear 81 rotates in the same direction as the switching lever 80, Thus the first nail 32
Is released and release is prevented.

The switching lever 80 extends outside the shaft housing 30, and the extended switching lever 80 prevents the connection between the power steering device and the conventional bicycle.

Therefore, the second specific example is to improve the above-mentioned disadvantage. Here, a steel wire is used in place of the switching lever to easily connect the power direction changing device to the conventional bicycle, thereby controlling the switching ring.

As shown in FIG. 10, the means for controlling the switching ring 43 of the second embodiment has a ring 44 at one end of the switching ring 43 having a plurality of holes 45. In this case, the ring 44
The steel wire 46 is connected to the outside of the shaft housing 30 through the hole 33 to control the switching ring 43. That is, the switching ring 43 prevents the first pawl 32 from being released when the steel wire is pulled, and the switching ring 43 releases the first pawl 32 when the steel wire 46 is pushed.

<Third Embodiment> A third specific example relates to a shaft housing 30, and the shape of the shaft housing 30 is such that the power direction changing device of the present invention is directly attached to a conventional bicycle without improving the conventional bicycle. It is improved to a suitable shape.

FIG. 11 shows a state in which the power direction changing device of the present invention is attached to a conventional bicycle. In the third embodiment, the appearance of the shaft housing 30 having a hollow cylindrical shape is improved.

The shaft housing 34 of this specific example has an appearance having many steps. That is, the cylindrical shaft housing 34
Has a number of steps in order on the left side, and the left side diameter of the shaft housing 34 is smaller than the right side diameter. Also, a connection tube 15 is employed to provide compatibility when connecting the power redirection device to the pedal hub 11 of a conventional bicycle. The right-hand thread 35 is formed outside the connection pipe 15. Furthermore, the outer diameter of the connection pipe 35 is the same as the outer diameter of the pedal hub 11, and the inner diameter thereof is the same as the outer diameter of the shaft housing 34. On the other hand, the additional nut 36 is manufactured as follows. A left-hand thread 37 is formed outside the nut 36, and the left inside of the nut 36 is machined with a slope 38.

Therefore, the shaft housing 34 is attached to the conventional bicycle according to the following procedure. First, the connecting pipe is connected to the pedal hub 11 using the right-hand thread 35, and the connecting pipe 11 is connected to the shaft housing 34 by a spline connection.
Next, the nut 36 is screwed to the opposite side by left-handed screwing with the left-handed screw 37, and then the assembly is completed using the washer 39.

When the power diverting device of the present embodiment is connected to a conventional bicycle, the shaft housing 34 is mounted on the power diverting device of the present invention through a driving sprocket when a reverse load caused by pulling the bicycle backward is applied. It is connected much more closely to the pedal hub 11. That is, when the reverse load applied to the power direction changing device is increased, the shaft housing 34 is connected to the right-hand thread 35 of the connection pipe 15 and the left-hand thread 37 of the nut 36 in opposite directions.
A gradient 38 formed inside 36 provides a much tighter connection to pedal hub 11.

Alternatively, the shaft housing 30 and the pedal hub 11 may be tightly coupled to each other by machining the contact portion between the side portions of the shaft housing 30 and the pedal hub 11 into a valley shape.

Industrial Applicability Accordingly, in a state in which the power redirection device is attached to a bicycle, the bicycle travels forward when the pedal is stepped forward or backward. In addition, when the pedal is depressed backward while the power direction changing device is attached to the bicycle, the bicycle can be idled when necessary. The power diversion device of the present invention as one of the "bidirectional pedal drives" differs from conventional bidirectional pedal drives in components and operating mechanisms. In addition, according to the power direction changing device of the present invention, the shape of each component is optimized, and therefore, concentration of a load on a specific portion is prevented. Furthermore, all components are integrally formed, thus simplifying the assembly process. The power diverter employs a switching lever to facilitate operation of the power diverter and an auxiliary ring to attach the power diverter to a conventional bicycle without modification of the conventional bicycle. ing.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-8-207871 (JP, A) JP-A-4-89492 (JP, U) US Pat. (58) Field surveyed (Int. Cl. ⁶ , DB name) B62M 11/00-11/18

Claims (16)

(57) [Claims] A sun gear coupled to a pedal shaft;
A bicycle power redirection device as a bi-directional pedal drive including a carrier having a plurality of planetary gears rotatably fixed thereon and a drive sprocket having an internal gear, comprising: a rotating pedal shaft; Having at least one opening inside the edge of the right cap and a hole in its side wall, a plurality of first pawls being inserted into said opening, and means for controlling a switching ring being inserted into said hole;
And a shaft housing in which the first pawl engages a first ratchet of the carrier; and a second housing disposed between the shaft housing and the first ratchet of the carrier and coupled to the switching ring control means. A switching ring having at least one or more holes in its surface portion to allow the gear to protrude or retract the first pawl on one side thereof toward the pedal shaft; and having a hollow cylindrical shape; First ratchet and second
Having a ring having at least one or more holes in its right portion, respectively, outside and inside its left portion, said right portion being integrally joined with said left portion, and having at least one or more Are arranged so as to be rotatable by the planetary gear shaft,
The second ratchet engages a second pawl of a sun gear, an inner portion of the planet gear engages a third gear of the sun gear, and an outer portion thereof is formed inside a sprocket cap. A carrier engaged with a fourth gear; a stepped hollow cylindrical shape having at least one or more apertures into which the second pawl fits, outside the small diameter left portion, the pedal; A sun gear having a central opening coupled to the shaft inside the left portion and a third gear outside the large diameter right portion; and a fourth gear to the right inside its own edge. And a sprocket cap that freely rotates independently of the pedal shaft and is fixed to the pedal shaft by a fixing nut. 2. The bicycle power redirector according to claim 1, wherein eight first pawls are located in said opening of said shaft housing. 3. The device of claim 1, wherein said means for controlling said switching ring is a first gear. 4. The bicycle power redirector according to claim 3, wherein said first gear is controlled by mounting a switching lever outside said shaft housing. 5. The means for controlling the switching ring of the shaft housing controls the switching ring using a steel wire, and a ring is formed at one end of the switching ring, and the steel wire is connected to the shaft. 4. The device according to claim 3, wherein the device is inserted into the wheel from outside through a hole in a housing. 6. The bicycle power direction changing device according to claim 1, wherein the number of the holes in the switching ring is eight. 7. The bicycle power direction changing device according to claim 1, wherein the number of the planetary gears of the carrier is eight. 8. The device according to claim 1, wherein four second pawls are inserted into said openings of said sun gear. 9. The device according to claim 2, wherein a spring device is inserted between the opening and the pawl. 10. The device according to claim 9, wherein the spring device is a single circular spring connecting the pawls. 11. The bicycle power redirector of claim 1 wherein said sun gear has a hexagonal central opening. 12. The bicycle power change device according to claim 1, wherein said sun gear has a spline-shaped central opening. 13. The sprocket cap according to claim 1, wherein said sprocket cap has a thread outside its left portion and at least one bracket outside its right portion, and has multiple steps.
The bicycle power redirector of claim 1, wherein at least one drive sprocket is adapted to be coupled to the sprocket cap. 14. The bicycle power change device according to claim 13, wherein a bearing is fixed to a center of said sprocket cap. 15. A bicycle power direction as a bidirectional pedal drive including a sun gear connected to a pedal shaft, a carrier on which a plurality of planetary gears are rotatably fixed, and a drive sprocket having an internal gear. A change device comprising: a disc-shaped side wall, supporting a rotating pedal shaft, having a hollow cylindrical projection on its right side and at least one or more third pawls on its outside and switching. A shaft housing having a hole for receiving means for controlling a ring; a fifth housing disposed between the third pawl and a third ratchet of the carrier and coupled to the switching ring control means.
A switching ring having on one side thereof, towards the pedal shaft and at least one hole in its surface, the third pawl being controlled; and at least one or more fourth ring A pawl and said third ratchet respectively outside and inside a left portion thereof, and a ring having at least one or more holes in a right portion thereof, said right portion being integrally connected to said left portion; At least one planetary gear is rotatably disposed within said ring by a planetary gear shaft, said fourth pawl engaging a fourth ratchet of a sprocket cap, A third ratchet engages the third pawl of the shaft housing, an inner portion of the planet gear engages a sixth gear of the sun gear, and an outer portion thereof engages a sprocket. A carrier engaged with a seventh gear formed on the inside of the cap; a sun gear having an inside fixed to the pedal shaft and an outside having a sixth gear; A sprocket cap having a fourth ratchet inside and a sprocket cap which is free to rotate independently of the pedal shaft and is fixed to the pedal shaft by a fixing nut. Power direction changing device. 16. A connecting pipe having a number of steps formed on the left side in order outside the shaft housing and having a right-hand thread on the outside having an outer diameter equal to the diameter of the pedal hub and an inner diameter equal to the inner diameter of the shaft housing. 16. The apparatus of claim 1 or 15, wherein the shaft housing is interchangeably mounted to a bicycle pedal hub by using a left-hand thread on the outside and a nut having a taper on the left inside.