KR100225752B1 - Velocity changing apparatus of bicycle hub - Google Patents

Abstract

The present invention is provided with a reverse drive speed conversion unit and a drive conversion unit in the rear wheel hub shell of the bicycle, and when the pedal shaft is pressed in the clockwise direction (forward driving direction), the drive conversion unit can move forward (forward rotation) like the existing bicycle In addition, the counterclockwise (weak driving force) input of the pedal shaft can be converted into idling with the reverse drive speed converter connected to the drive conversion unit, in particular, the reverse drive force can be output in the forward rotation At the same time, the reverse drive speed converting unit outputs the reverse drive force of the pedal shaft to the forward rotation by the change of position of the clutch and finally outputs the reverse drive force of the pedal shaft to the forward rotation by the position change of the clutch which is externally operated by the lever. Bicycle hub that can be converted to the same speed as the input speed or to low speed and idling A speed change device, comprising: a rear wheel hub in which a transmission using a planetary gear is mounted, which is rotatably mounted on a hub shaft (100) of a rear wheel and is fixed at a predetermined interval in a forward, reverse pole (320), and (330). ) Is a cylindrical driven sprocket housing 300, which is elastically maintained in the circumferential direction, a latching ring 400 of the hub shell which can be engaged with the forward pole 320 of the driven sprocket housing 300, and also a driven sprocket A drive converting unit (A) configured with a latch ring (13) coupled with a reverse pole (330) of the housing (300) to input positive and reverse driving forces of the driven sprocket (310); The ratchet ring 13 is coupled to the first carrier 10 and the planetary gears 11 of the planetary gears 11 and the planetary gears 11 of the first carrier 10 can be driven with respect to the hub shaft 100, respectively. Possible first sun gear 30, a second carrier 20 in which the first sun gear 30 and the planetary gears 21 are fixed to the hub shaft 100 to be cloud-driven, and the second carrier And the second sun gear 40 equipped with the planetary gears 21 of the 20 and the second sun gear pole 42 which is cloud-driven and protrudes elastically in a forward direction in one direction of the cone. A direction converting unit (B) capable of converting the reverse driving force of the unit (A) into forward rotation; Third aspect which can be combined with the second sun gear pole 42 of the second sun gear 40 of the direction change part B and can be combined with the fixed latch 230 fixed to the hub shell 200. A third carrier 50 which is cloud driven by the gear 60, the integral gear 150 of the hub shaft 100, the third sun gear 60 and the planetary gears 51, and the third The clutch 600 is slidable between the carrier 50 and the inner diameter of the second sun gear 40 so as to be elastically slidably movable (first, second, and third step positions) by an external lever. It is configured, the reverse drive speed conversion unit (C) capable of slowing down and idling the forward rotation of the direction conversion unit (B); Consists of

Description

Reverse Drive Speed Inverter of Bicycle Hub

The present invention relates to a reverse drive speed converter of the bicycle hub, more specifically, the reverse drive speed conversion unit and the drive conversion unit is installed in the rear hub hub shell of the bicycle, the pedal shaft is stepped in the clockwise direction (forward driving direction) the drive conversion unit The bicycle can move forward (forward rotation) like the existing bicycle, and the input of the counterclockwise direction (reverse driving force) of the pedal shaft can be converted into idling with the reverse driving speed conversion unit connected to the driving conversion unit, in particular. The reverse driving force can be output as the forward rotation of the input power, and the reverse driving speed converting section can be input while finally outputting the reverse driving force of the pedal shaft by the forward rotation by the position change of the clutch which can be operated by the lever from the outside. Reverse drive of the bicycle hub, which can be changed at speeds such as speed or at low speeds and idling It relates to a speed changing device.

In general, bicycles are divided into general bicycles used for transportation, mountain bicycles dedicated to mountain clouds, and cycles used for racing.

All of these bikes basically have wheels in front of and behind the bike frame, with a pair of pedals located between them to act as a power source.

The pedal's propulsion power is obtained by pedaling and transmitting it to the driving sprocket, chain and driven sprocket in turn to propel the rear wheel.

However, as with most of these bicycles, the pedal must be driven forward to drive the bicycle forward, and the pedal cannot be driven forward by driving the pedal backward.

Such a bicycle capable of driving the bicycle only in one direction has a problem in that the bicycle occupant easily fatigues the legs of the rider when the bicycle is driven for a long time and also makes the development of the leg muscles uneven.

Therefore, various inventors have tried to develop a device capable of driving a conventional bicycle in both directions, which can only drive in one direction.

The two-way drive developed so far (this means that if you pedal the bike forward, the bike will drive forward while the pedal will drive backwards, but the bike will still drive forward and at the same time Therefore, it is a device that pedal can idle even if you drive the pedal backward like a conventional bicycle by selecting the lever.

These can be largely divided into a method using an auxiliary gear, a method using a bevel gear and a method using a planetary gear.

Representative of the two-way drive device using the auxiliary gear is the invention of Mantzorsos et al. (EPO Publication No. 0,369,925), the invention using the bevel gear and clutch is Mr. Foster's invention (US Pat. No. 5,435,583), the representative invention using planetary gear The invention by the applicant (Application No. PCT / KR 96/00236).

These inventions are common in terms of applying intermediate gears (auxiliary gears, bevel gears, planetary gears) to change the power direction, but the method of converting the power direction, the distribution of load applied to each part during power conversion, There are many differences in precision and compatibility with existing bicycles.

Even so, these two-way drives are designed to be installed on the pedal axle of all bikes, so it's hard to find them on the rear wheels.

Among the above two-way driving devices, the invention by the applicant (Application No. PCT / KR 96/00236) has many advantages in the precision of parts, the smoothness of power conversion, and the compatibility that can be directly mounted on existing bicycle pedal shafts. However, the shape of the drive sprocket and the crank portion for inputting power is different from that of the existing ones, and thus, when the invention is mounted on an existing bicycle, these parts must be further replaced.

In addition, like the other inventions, the invention by the applicant also needs to be attached to the outside of the pedal shaft, so when the device is mounted on the bicycle, it protrudes out of the bicycle frame. This protruding portion may interfere with the driving of the bicycle rider (Pedaling), and the invention is also difficult to attach to the foldable bike that has been developed in recent years due to such a protrusion.

Therefore, there has been a need for developing such a device capable of mounting the bidirectional traveling device on the rear wheel shaft due to these problems.

On the other hand, in order to reduce the fatigue of the legs and to efficiently use the energy applied to the pedals when the cyclist rides the bicycle, the pedaling rhythm of the pedals should be even and the pedaling force applied to the pedals should be kept constant.

The gearbox developed to meet these conditions is the bicycle's transmission.

The gearbox of the bicycle adjusts the gear ratio of the driving sprocket and the driven sprocket, so that a proper response can be applied to the driving resistance according to the driving of the bicycle.

Such transmissions include external transmissions and internal transmissions. External transmission refers to a device that directly changes gear ratios by changing chains on several sprockets of different diameters mounted on the pedal shaft and the hub shaft. Refers to a device that changes the gear ratio by installing.

The internal transmission can be further miniaturized compared to the external transmission, can block the inflow of dust or foreign matter, and is installed inside the hub shell so that it is not easily damaged by external shocks.

Due to these advantages, the internal transmission is widely used in general bicycles. As an example of one of the inventions related to the internal transmission, Japanese Laid-Open Patent Publication No. Hei 5-65094 (1993.3.19) can be mentioned.

In addition, there are many inventions related to a built-in transmission in the rear hub of a bicycle, but most of them are related to increasing the efficiency of the transmission itself or increasing and decreasing the gear ratio, and equipped with a bidirectional drive device that changes the power transmission direction. None known.

As mentioned above, the two-way drive has been mainly studied about what can be mounted on the pedal shaft, and the research on what can be applied to the rear wheel hub shaft is difficult to find, and the invention related to the hub shaft is mainly related to the transmission. It is also not known the invention of a multi-purpose bicycle combined with a reverse drive forward driving device.

In the above two-way drive device, the invention according to the applicant (Application No. PCT / KR 95/69076), for example, is equipped with a transmission on one side on the hub shaft, a clutch on the center portion, and the other side on the hub shaft. The reverse drive section is installed separately.

The transmission consists of one sun gear, one carrier and one ring gear, the transmission being adapted to receive power from the clutch or reverse drive, and the power transmitted to the transmission is transmitted to the hub via various paths within the transmission. After exiting the shell, the rear wheels of the bicycle are driven at low, medium or high speed, depending on the power transmission path.

As described above, in the above invention, the shifting unit and the reverse driving unit are separately installed on the hub shaft so that the rear wheel is driven at low speed, medium speed or high speed by the clutch shifting operation, so that the hub shell length is changed according to the length of the hub shell. There is an unreasonable increase in the device, and the change of the clutch does not allow idling in driving the reverse drive, and the engagement of the pawls and latches of the transmission and the reverse drive prevents the bicycle from being pulled back. Had a problem.

Therefore, the present invention is a drive conversion unit capable of converting the forward and reverse driving force of the driven sprocket, and the reverse drive force is driven by the conversion of the clutch while the drive conversion unit is connected in parallel with the drive conversion unit to determine the hub shell At the same time, it forms a reverse drive speed converting unit capable of transmitting power of rotation and idle, and in particular, the reverse drive speed converting unit transmits reverse drive force of the drive converting unit at a speed equal to the input speed or at a speed lower than the input speed. The main feature is that it can be selected and output to the shell, and can also be converted to idling.

As described above, the bicycle driver can change the driving speed in three steps in the reverse driving mode in which the bicycle is fully driven while pressing the pedal in the counterclockwise direction. When driving forward by reverse driving, it is possible to optimize the running efficiency and at the same time reduce the fatigue and improve the balanced muscle development.

The basic configuration of the present invention is a bicycle rear wheel hub in which a transmission using a planetary gear is mounted, and is mounted on the hub shaft of the rear wheel so as to be rotatable and has a cylindrical shape in which the forward and reverse poles are elastically maintained in the circumferential direction at regular intervals. It consists of a driven sprocket housing, a latching ring of the hub shell that can be combined with the forward pole of the driven sprocket housing, and a latching ring that can be combined with the reverse pole of the driven sprocket housing to input the forward and reverse driving force of the driven sprocket housing. A drive conversion unit; The ratchet ring is coupled to the first carrier and the planetary gears and the planetary gears and the planetary gears of the first carrier, the first sun gear and the cloud-driven first gear, and the first sun gear and planetary gears are clouded A second sun gear which is driven to be fixed to the hub shaft, and a second sun gear equipped with a planetary gear of the second carrier and a forward pole which is cloud-driven and elastically protrudes in a forward direction in one conical direction; A direction converting unit capable of converting the reverse driving force of the driving converting unit into the forward rotation; A third sun gear which is engageable with the forward pole of the second sun gear of the directional conversion part and that can be coupled with a fixed latch fixed to the hub shell, an integral gear of the hub shaft, the third sun gear and planetary gears; And a third carrier which can be driven by a cloud and between the third carrier and the inner diameter of the second sun gear so as to be elastically slidable (first, second, third position shifting) by an external lever. It is composed of a clutch, the reverse drive speed conversion unit for decelerating and idling the forward rotation of the direction conversion unit; Consists of

In the above configuration, a drive conversion unit is formed by mounting a driven sprocket housing in which the forward and reverse poles are mounted in the hub shell, respectively, and the drive conversion unit is, for example, in accordance with the input of forward and reverse rotation of the driven sprocket. When it is input, the forward pole of the longitudinal sprocket housing rotates the ratchet fixing ring fixed to the hub shell so that the regular driving force can be output to the hub shell.

In addition, the reverse drive speed conversion unit connected by the drive conversion unit and the carrier means is configured in parallel, when the reverse rotation is input in reverse, the reverse pole of the driven sprocket housing drives the carrier means, these carrier means It is to be transmitted to the reverse drive speed converter connected to the drive.

In particular, the reverse drive speed converting unit may convert the reverse drive force of the drive converting unit to forward rotation by changing the position of the clutch operated by an external lever, and at the same time, input the same speed or low speed as the input speed. It can be converted and transmitted to the shell, and the input reverse driving force can be converted to idle.

The power transmission path in the present invention will be briefly described as follows. First, the power generated by the pedal reaches the driven sprocket of the present invention via the crank, the driving sprocket and the chain in turn. The driven sprocket rotates with the drive wheel and inputs power into the apparatus and transmits the power to the drive converter, the direction converter and the reverse drive speed converter.

The drive converting unit transfers the received power to the direction converting unit and the hub shell, and the drive converting unit finally outputs the received powers through the hub shell. The power output to the hub shell drives the rear wheel of the bicycle.

1 is a cross-sectional view of the reverse drive force speed conversion apparatus of the bicycle hub of the present invention.

Figure 2a, b is an exploded perspective view of the reverse drive speed converter of the bicycle hub of the present invention.

3 is a partially cutaway perspective view of the driven sprocket housing, pole control cylinder, ratchet ring and ratchet retaining ring of the present invention.

4 is a cross sectional view of the driven sprocket at the time of driving in FIG.

5 is a cross-sectional view of the driven sprocket when driving the driven sprocket in FIG.

6 is a cross-sectional view showing the conversion flow of the reverse drive in a state in which the clutch of the reverse drive force speed conversion device of the bicycle hub of the present invention is set to one stage.

FIG. 7 is a cross-sectional view showing a conversion flow of the reverse road in which the clutch of the reverse drive force speed conversion device of the bicycle hub of the present invention is set to two stages (low speed). FIG.

8 is a cross-sectional view showing a conversion flow of reverse drive in a state in which the clutch of the reverse drive force speed conversion device of the bicycle hub of the present invention is set to two stages (idling).

9a and b are views showing the operation of the third sun gear by the clutch of the present invention.

10 is an example of mounting the forward and reverse poles of the driven sprocket housing of the present foot.

* Explanation of symbols for main parts of the drawings

10: first carrier 11: planetary gear

13: ratchet ring 20: second carrier

21: planetary gear 30: first sun gear

40: second sun gear 42: second sun gear pole

44: inclined groove 50: third carrier

51: planetary gear 60: third sun gear

62: third sun gear pole 100: hub shaft

200: hub shell 300: driven sprocket housing

310: driven sprocket 320: forward pole

330: reverse pole 400: latching ring

550: pole control cylinder 510: maintenance cut groove

600: clutch 610: conversion projection

620: Slide protrusion 700: Pin lever

An embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 to 4, the hub shell 200 mounted rotatably by a bearing or the like with respect to the hub shaft 100, as shown in FIGS. A), the direction conversion unit and the reverse drive speed conversion unit (C) is to be mounted, and the driven sprocket 310 is connected to the pedal shaft (not shown) and the chain on the side of the drive conversion unit (A) This fixed driven sprocket housing 300 is fixed.

In addition, the circumferential circumferential surface of the hub shaft 100 is a rod-shaped with a screw 201, the integral gear 150 and the spline 202, the hub shaft 100 is transverse to the center of the hub shell 200 As shown in FIG. 1, both sides of the cover 210 are mounted by fixing means such as a nut 220 to maintain airtightness with the hub shell 200.

A pin 130 is coupled to the center of the hub shaft 100 in an orthogonal direction in the center direction to the long hole 120 of the slide circumferential surface 110 as shown in FIGS. 1 and 2, and the clutch 130 is connected to the pin 130. 600).

In addition, the clutch 600 is elastically supported by the coil spring 630 supported on the side wall of the second carrier 20 which will be described later, and is slidably coupled to the slide circumferential surface 110 to the left and right. .

The clutch 600 is formed in a cylindrical shape, and the conversion protrusions 610 and the slide protrusions 620 are integrally formed at equal intervals on both sides of the outer circumference.

The conversion protrusion 610 of the clutch 600 has an inner diameter of the circumferential groove 52 and the third sun gear 60 of the third carrier 50, which will be described later, and the slide protrusion 620 is the first diameter. The inclined recess 44 of the two sun gears 40 is slidably coupled.

In FIGS. 1 and 2, lever mounting means operable to the outside may be coupled into the hollow portion at the left end of the hub shaft 100.

The lever mounting means may include a pin lever 700 capable of moving the clutch 600 in the axial direction (left direction in FIG. 1) elastically at the hollow portion of the hub shaft 100, and the pin lever 700. It consists of a lever support 710 connected with.

The lever support 710 is a link 730 is connected to the rotatable hinge shaft 720, one end of the link 730 is connected to the conversion lever (not shown) mounted on the handle of the bicycle (740) ) Is connected, and the other side is in contact with the pin lever 700.

Next, in accordance with the slide movement of the pin lever 700, as described above, the conversion protrusion 610 of the clutch 600 may have a circumferential groove 52 and a third sun gear of the third carrier 50 to be described later. An inner diameter of the 60 and the slide protrusion 620 are slidably coupled to the inclined groove 44 of the second sun gear 40.

First, prior to the description of each component of the drive conversion unit A, the direction conversion unit B, and the reverse drive speed conversion unit C of the present invention, the drive transmission when the reverse drive force is generated in the longitudinal sprocket 310 is generated. Look at the path.

In a state in which the externally operable operation lever is not operated, that is, in a state in which it is engaged with the circumferential groove 52 of the third carrier 50 of the clutch 600, as shown in FIG. Likewise, the reverse rotation of the driven sprocket 310 is performed by the driven sprocket housing 300, the reverse pole 330, the latch ring 13 of the first carrier 10, the first carrier 10, and the first sun gear ( 30), the planetary gear 21 of the second carrier 20, the second sun gear 40, the sliding projection 620 of the clutch 600, the circumferential groove of the clutch 600, the third carrier 50 52, the planetary gear 51 of the third carrier 50, the third sun gear pole 62 of the third sun gear, the fixed latch 230, the hub shell 200 output of the forward rotation (driven The same speed as the input speed of the sprocket).

Next, when the position is the same as that shown in FIG. 7, the reverse rotation of the driven sprocket 310, as shown by the thick dotted line, the latching ring of the driven sprocket housing 300, the reverse pole 330, the first carrier 10 13, the first carrier 10, the first sun gear 30, the planetary gear 21 of the second carrier 20, the second sun gear 40, the second sun gear pole 42, the first Output of the forward rotation to the inner latch 63, the third sun gear 60, the third sun gear pole 62, the fixed latch 230, the hub shell 200 of the three sun gear 60 (follower) Speed lower than the input speed of the sprocket).

In the case shown in FIG. 8, the reverse rotation of the driven sprocket 310, as indicated by the thick dotted line, includes the latching ring of the driven sprocket housing 300, the reverse pole 330, and the first carrier 10. 13), the first carrier 10, the first sun gear 30, the planetary gear 21 of the second carrier 20, the second sun gear 40, the second sun gear pole 42, the third The idling output is performed to the inner latch 63 and the third sun gear 60 of the sun gear 60.

As described above, the driving parts may be divided into a driving conversion unit A, a direction conversion unit B, and a reverse driving speed conversion unit C.

The drive conversion unit A is rotatably mounted on the hub shaft 100 of the rear wheel (not shown) and has a cylindrical shape in which the forward, reverse poles 320 and 330 are elastically maintained in the circumferential direction at regular intervals. The driven sprocket housing 300, the ratchet fixing ring 400 of the hub shell 200 that can be coupled to the forward pole 320 of the driven sprocket housing 300, and also the reverse pole of the driven sprocket housing 300 ( 330 is coupled to the latch ring 13 is coupled to the forward and reverse driving force of the driven sprocket is input.

The driven sprocket housing 300 is formed in a substantially cylindrical shape as shown in Figs. 1, 5 and 10, the driven sprocket 310 is mounted on one side, the other protruding projections 340 on the circumferential surface of the four sides; Are integrally formed so that the forward and reverse poles 320 and 330 are elastically separated by the ring springs 350 and 350 at regular intervals from the protrusions 340. Each is mounted so that it can be mounted in the forward and reverse directions.

The forward and reverse poles 320 and 330 are maintained in the driven sprocket housing 300 with a positive elastic force, and the top and reverse poles 320 and 330 are maintained in a circumferential direction. 510, 510 is formed in a cylindrical pole control cylinder 500 is coupled, this pole control cylinder 500 is coupled to control the forward, reverse poles 320, 330.

Therefore, when a forward rotation is input to the driven sprocket 310 of the drive conversion unit A, the forward pole 320 of the driven sprocket housing 300 is coupled with the ratchet fixing ring 400 to the hub shell 200. If the reverse rotation is input, the reverse hole 330 of the driven sprocket housing 300 is coupled to the ratchet ring 13 of the first carrier 10 to the direction change unit (B). Rotation force is output.

Next, the direction converting portion B is connected to the driving converting portion A, and its components are composed of the first carrier 10, the first sun gear 30, the second carrier 20, and the second sun. Gear 40 is made to accelerate the rotational force while changing the reverse rotation of the drive conversion unit (A) to the forward rotation movement.

The first carrier 10 is formed in a substantially cap shape as shown in FIGS. 1 and 2, and a ring ring 12 is integrally provided with a latch ring 13 having teeth in opposite directions formed on an outer side circumference thereof. Coupled to, the ratchet ring 13 is coupled to the reverse pole 330 of the driven sprocket housing 300, and receives the reverse driving force of the driven sprocket 310.

In addition, the planetary gears 11 rotatably mounted in the circumferential direction of the first carrier 10 may include a fixed gear 140 fixed to the hub shaft 100 and an inner gear of the first sun gear 30. And 31 are formed to be cloud-driven.

As shown in FIGS. 1 and 2, the first sun gear 30 has an inner gear 31 formed thereon so that the first sun gear 30 can be cloud driven with the planetary gear 11 of the first carrier 10. The sun gear 32 integrally formed on the side is driven to cloud with the planetary gears 21 of the second carrier 20.

In addition, the planetary gears 21 of the second carrier 20 are driven to cloud with the sun gear 32 of the first sun gear 30, and the inner gear 41 of the second sun gear 40. And cloud-driven to convert the reverse rotation of the drive conversion unit (A) to the forward rotation, and to accelerate the forward rotation speed.

In addition, the second sun gear 40 has inner planets 41 formed on the inner side of the circumference as shown in FIGS. 1 and 2A and b, and the planetary gears 21 of the second carrier 20 as described above. Cloud-driven, the opposite side of the inner gear 41 is the second sun gear poles 42 by the ring spring 43, the base portion thereof is maintained elastically, the inner side of the third sun gear 60 to be described later It is formed in close contact with the ratchet 63, and the inclined groove 44 is formed in the longitudinal direction thereof so as to be engageable with the clutch 600.

Next, the reverse drive speed converting unit C is composed of a fixed latch 230 fixed to the third sun gear 60, the third carrier 50, the clutch 600, and the hub shell 200.

That is, the reverse drive speed conversion unit C is coupled to the second sun gear pole 42 of the second carrier 40 of the direction conversion unit B and is fixed to the hub shell 200. Third sun gear 60 which can be combined with the cheat 230, and a cloud drive by the integral gear 150 of the hub shaft 100, the third sun gear 60 and planetary gears (51) It is possible to slide between the three carriers 50 and the inner diameter of the third carrier 50 and the second sun gear 40 so as to be elastically slid by an external lever (first, second and third step position shifting). It is composed of a clutch 600 that can be mounted, it is possible to decelerate and idle the forward rotation of the direction change unit (B).

As shown in FIGS. 1 and 2, the third sun gear 60 has an inner latch 63 and an inner gear 61 formed at both inner diameters thereof, and the inner sun rat 63 has the second sun gear ( The second sun gear pole 42 of 40 is formed to be coupled, and the inner gear 61 is formed to be cloud-driven with the planetary gears 51 of the third carrier 50.

In addition, between the inner latch 63 and the inner gear 61 of the third sun gear 60, a third sun gear pole 62 that can be projected to the inner and outer circumferential surface is formed to control the hub by controlling the clutch. It is formed to be coupled to the fixed latch 230 fixed to the shell (200).

In particular, the third sun gear pole 62 of the third sun gear 60 protrudes inward or outward of the cylindrical portion of the third sun gear 60 by a hinge 64 having a central portion in the circumferential long hole. It is possible.

For example, as shown in FIGS. 8 and 9B, the clutch 600 is positioned at the third stage (the conversion protrusion 610 is at the third sun gear pole 62 of the third sun gear 60 to be horizontal to maintain the position of the long hole. In a state that does not protrude in and out), the third sun gear pole 62 of the third sun gear 60 may be maintained in a state where the coupling with the fixed latch 230 of the hub shell 200 is released.

That is, in this state, the rotational force of the second sun gear 40 is directly transmitted to the third sun gear 60 to maintain the idle state.

In addition, the third carrier 50 is rotatably mounted to the planetary gears 51 in the circumferential direction, the planetary gears 51 are integral gear 150 of the hub shell 200, and also the third sun gear ( 60) and cloud-driven.

In addition, the inner diameter of one side of the third carrier 50 is formed at equal intervals of the circumferential groove 52 as shown in FIGS. 1 and 2 so that the conversion protrusion 610 of the clutch 600 can be engaged in the direction. The rotational force of the converting unit B can be transmitted to the hub shell 200 through the third sun gear 60.

In the above state, as shown in FIG. 6, the reverse drive force of the drive conversion unit A is rotated forward to transmit the forward drive force to the hub shell 200 as the input speed of the drive conversion unit A is maintained.

Referring to the operation of the power converter of the bicycle hub of the present invention as follows.

First, when the driven sprocket 310 of the driven sprocket housing 300 is rotated forward by the chain connected to the pedal shaft, the driven sprocket housing 300 to which the driven sprocket 310 is fixed as shown in FIG. The reverse pole 330 of the sprocket housing 300 is mounted and coupled with the ratchet fixing ring 400 to rotate the hub shell 200 forward to drive the rear wheels forward.

At this time, the reverse pole 330 of the driven sprocket housing 300 is controlled by the pole control cylinder 500, the coupling with the latch ring 13 of the first carrier 10 is released, the forward drive clutch 600 Regardless of the position conversion of the conversion projections 610 of the driven sprocket 310 is to rotate the hub shell 200 as it is the input speed.

Next, when the pedal shaft is reversely driven in the upper part of FIG. 6, that is, in a state in which the pedal shaft is coupled to the circumferential groove 52 of the third carrier 50 of the clutch 600, a driving force is transmitted as shown in the thick dotted line of the drawing. The reverse rotation of the sprocket 310 rotates the driven sprocket housing 300 in reverse, so that the reverse pole 330 of the driven sprocket housing 300 is coupled with the latch ring 13 of the first carrier 10 so that the first sprocket 310 may rotate. The carrier 10 is reversed.

The first carrier 10 drives the inner gear 31 of the first sun gear 30 while rolling the fixed gear 140 whose planetary gears 11 are fixed to the hub shaft 100. As a result, the sun gear 32 of the first sun gear 30 performs cloud driving with the planetary gear 21 of the second carrier 20.

Also, the planetary gears 21 of the second carrier 20 drive the second sun gear 40 by performing a cloud drive with the inner gear 41 of the second sun gear 40, and the second sun gear ( Rotation of the 40 is transmitted to the slide projection 620 of the clutch 600 coupled with the inclined groove 44 of the second sun gear 40 to rotate the clutch 600, and also of the clutch 600 The third carrier 50 coupled with the conversion protrusion 610 and the circumferential groove 53 receives a rotational force.

The rotation of the third carrier 50 is a planetary gear 51 of the third carrier 50 while the planetary gear 51 of the third carrier 50 is cloud-driven with the integral gear 150 of the hub shaft (100). Rotates the third sun gear 60 and the third sun gear pole 62 of the third sun gear 60 is coupled with the fixed latch 230 to output the hub shell 200 in the forward rotation (driven sprocket Is the same as the input speed.

Next, when the clutch 600 is operated by the lever support 710 in the position as shown in FIG. 7 by operating from the outside, it is driven as indicated by a thick dotted line, and the reverse rotation of the driven sprocket 310 is the longitudinal direction. By rotating the pocket housing 300 in reverse, the reverse pole 330 of the driven sprocket housing 300 is coupled with the latch ring 13 of the first carrier 10 to rotate the first carrier 10 in reverse.

The first carrier 10 drives the inner gear 31 of the first sun gear 30 while rolling the fixed gear 140 whose planetary gears 11 are fixed to the hub shaft 100. As a result, the first sun gear 32 performs cloud driving with the planetary gear 21 of the second carrier 20.

Also, the planetary gears 21 of the second carrier 20 drive the second sun gear 40 by performing a cloud drive with the inner gear 41 of the second sun gear 40, and the second sun gear ( The rotation of the 40 is because the position of the clutch 600 described above is released from the conversion protrusion 610 and the circumferential groove 52 of the clutch 600, so that the second sun gear pawl 42 is made into a first position. It is combined with the inner latch 63 of the three sun gear 60 to rotate the third sun gear 60, and the third sun gear pole 62 of the third sun gear 60 is a fixed latch ( 230 is combined with the hub shell 200 to perform the output of the forward rotation (speed lower than the input speed of the driven sprocket).

In addition, when the clutch 600 is operated by the lever support 710 in the position as shown in FIG. 8 by operating from the outside, as shown by a thick dotted line, the reverse rotation of the longitudinal sprocket 310 is driven by the sprocket housing. The reverse pole 330 of the driven sprocket housing 300 is coupled to the ratchet ring 13 of the first carrier 10 by rotating the 300 to reversely rotate the first carrier 10.

The first carrier 10 drives the inner gear 31 of the first sun gear 30 while rolling the fixed gear 140 whose planetary gears 11 are fixed to the hub shaft 100. As a result, the sun gear 32 of the first sun gear 30 performs cloud driving with the planetary gear 21 of the second carrier 20.

Also, the planetary gears 21 of the second carrier 20 drive the second sun gear 40 by performing a cloud drive with the inner gear 41 of the second sun gear 40, and the second sun gear ( The rotation of the 40 is because the position of the clutch 600 described above is released from the conversion protrusion 610 and the circumferential groove 52 of the clutch 600, so that the second sun gear pawl 42 is made into a first position. It is combined with the inner latch 63 of the three sun gear 60 to rotate the third sun gear 60 to output the idle rotation to the third sun gear (60).

At this time, the clutch 600 is in the position of the third stage (the state in which the conversion protrusion 610 does not protrude into or out of the hole by keeping the third sun gear pole 62 of the third sun gear 60 horizontal). The third sun gear pole 62 of the third sun gear 60 may be maintained in a state where the coupling with the fixed latch 230 of the hub shell 200 is released.

That is, in this state, the rotational force of the second sun gear 40 is directly transmitted to the third sun gear 60 to maintain the idle state.

According to the present invention as described above, the drive conversion unit capable of converting the forward and reverse driving forces of the driven sprocket, and the reverse drive force is driven by the conversion of the clutch while the drive conversion unit is connected in parallel with the drive conversion unit, the hub shell At the same time, it forms a reverse drive speed conversion unit capable of transmitting the power of forward rotation and idling, and in particular, the reverse drive speed conversion unit transfers the reverse drive force of the drive conversion unit at the same speed as the input speed or at a lower speed than the input speed. Each hub shell can be selected and output, and the effect can be converted to idling.

Claims (9)

A bicycle rear wheel hub with a transmission using planetary gears, comprising: a cylindrical driven sprocket housing mounted rotatably on the hub shaft of the rear wheel and having a forward and a reverse pole elastically maintained in the circumferential direction at regular intervals; A drive converting unit configured of a ratchet fixing ring of the hub shell that can be coupled to the forward pole of the sprocket housing, and a latch ring that can be coupled to the reverse pole of the driven sprocket housing to receive the positive and reverse driving force of the driven sprocket; The ratchet ring is coupled to the first carrier and the planetary gears and the planetary gears and the planetary gears of the first carrier, the first sun gear and the cloud-driven first gear, and the first sun gear and planetary gears are clouded A second sun gear which is driven to be fixed to the hub shaft, and a second sun gear equipped with a planetary gear of the second carrier and a forward pole which is cloud-driven and elastically protrudes in a forward direction in one conical direction; A direction converting unit capable of converting the reverse driving force of the driving converting unit into the forward rotation; A third sun gear which is engageable with the forward pole of the second sun gear of the directional conversion part and that can be coupled with a fixed latch fixed to the hub shell, an integral gear of the hub shaft, the third sun gear and planetary gears; And a third carrier which can be driven by a cloud and between the third carrier and the inner diameter of the second sun gear so as to be elastically slidable (first, second, third position shifting) by an external lever. It is composed of a clutch, the reverse drive speed conversion unit for decelerating and idling the forward rotation of the direction conversion unit; Reverse drive speed converter of the bicycle hub, characterized in that consisting of. According to claim 1, When the forward rotation is input to the driven sprocket of the drive conversion unit driven s * When the forward pole of the sprocket housing is combined with the ratchet height ring and outputs to the hub shell at regular driving force, and the reverse rotation is input, the reverse pole of the driven sprocket housing is combined with the latch ring of the first carrier to change the direction. Reverse drive speed converter of the bicycle hub, characterized in that the rotational force is output to the negative. The bicycle hub according to claim 1 or 2, wherein the forward and reverse poles are controlled by a cylindrical pole control cylinder in which the driven sprocket housing is maintained with a positive elastic force in the forward direction and a retention cutout groove is formed in the circumferential direction. Reverse drive speed inverter. 2. The first carrier of claim 1, wherein a latch ring having teeth in opposite directions is coupled to an outer circumference thereof, the latch ring being engageable with a reverse pole of the driven sprocket housing and circumferentially rotatable. The planetary gears of the rear hub drive speed converter of claim 1, wherein the planetary gears are formed to be fixed to the hub shaft and to the inner gear of the first sun gear. The sun gear according to claim 1 or 4, wherein the sun gear formed integrally with the outer side circumference of the first sun gear is cloud driven with the planetary gears of the second carrier, and the planetary gears are inner gears of the second sun gear. And a rolling drive to convert the reverse rotation of the drive conversion unit into a forward rotation and at the same time accelerate the forward rotation speed of the bicycle hub. The reverse driving force conversion device of claim 1, wherein the second sun gear has an inclined recess formed in its inner diameter in a longitudinal direction so as to be coupled to the clutch. According to claim 1, wherein the third sun gear is formed inside the inner ratchet and the inner gear on both inner diameters, the inner ratchet is formed so that the second sun gear pole of the second sun gear can be coupled, The planetary gear of the third carrier is formed in the inner gear so as to be cloud-driven, and a third sun gear pole which is protruding from the inner latch and the inner gear to the inner and outer circumferential surfaces is formed to control the clutch. Reverse drive speed converter of the bicycle hub, characterized in that it is formed to be coupled to the fixed latch fixed to the hub shell. According to claim 1, wherein the inner diameter of one side of the third carrier is formed with a circumferential groove in the same interval so that the clutch can be coupled so that the rotational force of the direction change portion is formed to be transmitted to the hub shell through the third sun gear Reverse drive speed converter of the bicycle hub. 9. The circumferential surface of the clutch according to claim 1 or 8, wherein a conversion projection and a slide projection are formed at regular intervals, and the conversion projection further includes an inner diameter of the circumferential groove of the third carrier and the third sun gear. The slide projection reverse driving force speed converter of the bicycle hub, characterized in that the slide groove is coupled to the inclined groove of the second sun gear.

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