JP2008533404A - Bicycle shifting hub - Google Patents

Abstract

  The present invention provides a bicycle transmission hub that can be easily operated, prevents the generation of noise and vibration during gear shifting, and has a simple structure. The transmission hub includes: a hub shaft (100) provided between frames; a power transmission unit having a driven sprocket (310) and a driver (320); a carrier (490), a plurality of multi-stage planetary gears (420), a sun gear (430) ), (440), and a ring gear (410); a transmission output unit having a hub axle (600) and clutch means (640), (650); clutch means (510), (650), And an input / output control unit having an input / output control plate (520); and movable pins (220), (230), a return spring (210), and control members (240), (250), (260), A transmission control unit.

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention generally relates to a transmission hub, and more particularly to a built-in bicycle transmission that is used in a power transmission device provided with a chain or a belt, and that is incorporated in the hub and that changes speed by changing a gear ratio. About.

  2. Description of the Related Art Generally, in a bicycle transmission, a plurality of sprockets having different diameters are provided at the front and rear of a bicycle, respectively, and a gear shift is performed by moving a chain between the sprockets. Such a transmission in which a plurality of sprockets having different diameters are respectively provided at the front and rear of the bicycle, and the speed is changed by moving a chain between the sprockets, is called an open transmission. Further, there is a built-in transmission that can change the speed by using a gear train incorporated in a hub.

  However, in a transmission using several sprockets having different diameters, noise and impact are generated. In addition, because it is exposed to the outside, safety hazards such as user clothing can be trapped between the sprockets.

  On the other hand, in order to solve the above problems, a built-in transmission incorporated in a hub of a rear wheel of a bicycle has been proposed. In this apparatus, since the gear train is provided in the hub shell, the speed is changed by the ratio of the number of gear teeth. However, this apparatus has a disadvantage that the structure is complicated.

  Accordingly, the present invention has been made in view of the above-described problems that occur in the prior art, and an object of the present invention is to prevent the generation of noise and vibration when shifting by a rider operating a lever. And can be covered with a cover without a chain, thus preventing the rider's clothing from being caught by the device, and by increasing the number of speeds, for example when driving on slopes or long distances It is an object of the present invention to provide a bicycle transmission hub that allows a rider to change gears more conveniently according to the situation.

  As described above, the bicycle transmission hub according to the present invention can be easily operated by the rider, prevents noise and vibration from being generated at the time of shifting, has a simple structure, and increases the number of speeds. The rider can change gears more conveniently according to the situation such as driving on a slope or long distance.

  Moreover, the transmission hub according to the invention does not have a chain. For this reason, since it can cover with a cover, it can prevent that a rider's clothes are caught by a device. Thus, the rider can use the bicycle more safely and conveniently.

  While the preferred embodiment of this invention has been disclosed for purposes of illustration, those skilled in the art will recognize that various modifications, additions and substitutions can be made without departing from the scope and spirit of the invention disclosed in the appended claims. You will recognize that it is possible.

  Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

  FIG. 1 is a sectional view of a bicycle transmission hub according to the present invention.

  In order to achieve the above object, the present invention is a built-in transmission used in a power transmission device, in particular, a power transmission device using a chain or a belt, and incorporated in a hub, and changes speed by changing a gear ratio. And providing a bicycle transmission hub operated by an external lever. The transmission hub of the present invention includes a hub shaft 100 provided between the frames and provided with a spline-shaped ratchet 110 around the outer surface thereof.

  The transmission hub further includes a power transmission unit. The power transmission unit includes a driven sprocket 310 that receives a clockwise driving force from a driving sprocket (not shown), and a driver 320 that is coupled to the driven sprocket 310 at a first end and has a ratchet 321 at a second end. Yes. The clutch means 330 is provided around the inner surface of the driver 320.

  The transmission hub further includes a multi-stage transmission unit. The multi-stage transmission unit includes a carrier 490 that receives a driving force from the power transmission unit. A ratchet 491 is provided at the first end of the carrier 490, and a plurality of multi-stage planetary gears 420 and third clutch means 640 are provided at the second end of the carrier 490. The multi-stage transmission unit further includes two or more sun gears 430 and 440 that mesh with the multi-stage planetary gear 420. Sun gears 430 and 440 have forward and reverse clutch means 431, 432, 441 and 442 around the inner surface. The multi-stage transmission unit further includes a ring gear 410 that meshes with the multi-stage planetary gear 420 and has second and fourth clutch means 510 and 650 around the inner surface and outer surface of the second end, respectively.

  The transmission hub further includes a transmission output unit. The speed change output unit includes a hub shell 600 that receives driving force from the carrier 490 and the ring gear 410, and third and fourth positions arranged at predetermined positions between the carrier 490 and the hub shell 600 and between the ring gear 410 and the hub shell 600, respectively. Clutch means 640 and 650 are provided. Only the preceding one of the third and fourth clutch means operates selectively.

  The transmission hub further includes an input / output control unit. The input / output control unit is controlled by a combination of the second and fourth clutch means 510 and 650 provided between the ring gear 410 and the driver 320, and the second and fourth clutch means 510 and 650 and at a predetermined position. An input / output control plate 520 having protrusions is provided.

  The transmission hub further includes a transmission control unit. The shift control unit includes a plurality of movable pins 220 and 230 that are moved by an external lever, a return spring 210 that returns the movable pins 220 and 230 to an initial position, and a first that is provided to a driver 320 that is operated by the movable pins 220 and 230. Control members 240, 250 and 260 for controlling both the clutch means 330 and the clutch means 450, 460, 470 and 480 attached to the sun gear are included.

  FIG. 2 is a view for explaining the operation of the transmission control unit of the transmission hub according to the present invention. FIG. 3 is an exploded perspective view showing the speed change control unit of the speed change hub of the present invention. The movable pins 220 and 230 provided on the hub shaft 100 are moved to the left and right by the operation of an external lever (not shown) or the action of the return spring 210, and thus the control is fitted on the hub shaft 100 so as to be movable left and right. The member 240 is moved. Due to the movement of the control member 240, forward and reverse control pins 250 and 260 having protrusions and depressions are attached to the clutch means 450, 460, 470 and 480 around the inner surfaces of the first and second sun gears 430 and 440. To control the speed of the bicycle. Further, the first clutch means 330 attached to the driver 320 is released or meshed by the movement of the control member 240.

  FIG. 4 is a diagram for explaining the operation of the input / output control unit of the transmission hub according to the present invention. In the low speed first gear or the low speed second gear, the second clutch means 510 that receives power from the driver 320 rotates a predetermined angle in order to rotate the input / output control plate 520. At this time, the fourth clutch means 650 is disengaged from the ratchet 601 of the hub shell 600 by the rotation of the input / output control plate 520. Further, since the hub shell 600 rotates at a higher speed than the fourth clutch means 650 in the medium speed gear, the high speed first gear, or the high speed second gear, the hub shell 600 and the fourth clutch means 650 slide without meshing with each other. ing.

  FIG. 5 is a view for explaining another embodiment of the input / output control unit of the transmission hub according to the present invention. In this case, in the low-speed first gear or the low-speed second gear, the input / output control plate 520 having protrusions on the inner and outer surfaces is rotated by a predetermined angle by the power transmitted from the ratchet 321 of the driver 320. As a result, the fourth clutch means 65 is disengaged from the ratchet 601 of the hub shell 600, and at the same time, the second clutch means 510 is engaged with the ratchet 321 of the driver 320. Further, since the ring gear 410 rotates at a higher speed than the driver 320 in the medium speed gear, the high speed first gear, or the high speed second gear, the input / output control plate 520 slips with respect to the driver 320 without meshing with the driver 320. Yes.

  FIG. 1 is a sectional view showing a vehicle transmission hub according to the present invention. The effects of the present invention will be described below with reference to FIG. In this invention, when the user moves the speed change unit of the speed change hub by operating a lever (not shown), the bicycle has a low speed first gear, a low speed second gear, a medium speed gear, a high speed first gear, or a high speed first gear. Shifted to 2 gears.

  1. For low-speed first gear

  In the case of the low-speed first gear, the first clutch means 330 attached to the driver 320 is in the released state, and the first reverse clutch means 460 attached around the inner surface of the first sun gear 430 is also in the released state. In this state, the driving force of the driving sprocket is transmitted to the driven sprocket 310 connected to the driving sprocket via the chain. The clockwise rotation of the driven sprocket 310 is transmitted to the driver 320 holding one end. Since the operation of the driver 320 is transmitted to the second clutch means 510, the second clutch means 510 rotates by a predetermined angle, thus rotating the input / output control plate 520. Then, the fourth clutch means 650 is released from the ratchet 620 provided around the inner surface of the hub shell 600, and the driving force is transmitted from the second clutch means 510 to the ring gear 410. The multi-stage planetary gear 420 meshed with the ring gear 410 is moved by the rotation of the ring gear 410. As the multi-stage planetary gear 420 moves, the second sun gear 440 engaged with the multi-stage planetary gear 420 tries to move. However, since the second sun gear 440 is stopped by the second reverse clutch means 480, the carrier 490 moves. . At this time, the first sun gear 430 is released from the first reverse clutch means 460. The driving force transmitted to the carrier 490 is transmitted to the hub shell 600 via a ratchet 610 provided around the inner surface of the hub shell 600. Accordingly, the wheel coupled to the hub shell 600 by the spokes is rotated by the rotation of the hub shell 600, thus moving the bicycle.

  2. Low speed second gear

  In the case of the low-speed second gear, the first clutch means 330 attached to the driver 320 is in the released state, and the second reverse clutch means 470 attached to the periphery of the inner surface of the second sun gear 440 is also in the released state. In this state, the driving force of the driving sprocket is transmitted to the driven sprocket 310 connected to the driving sprocket via the chain. The clockwise rotation of the driven sprocket 310 is transmitted to the driver 320 holding one end. Since the operation of the driver 320 is transmitted to the second clutch means 510, the second clutch means 510 rotates by a predetermined angle, thus rotating the input / output control plate 520. Then, the fourth clutch means 650 is released from the ratchet 610 provided around the inner surface of the hub shell 600, and the driving force is transmitted from the second clutch means 510 to the ring gear 410. The multi-stage planetary gear 420 meshed with the ring gear 410 is moved by the rotation of the ring gear 410. As the multi-stage planetary gear 420 moves, the first sun gear 430 meshed with the multi-stage planetary gear 420 tries to move. However, since the first sun gear 430 is stopped by the first reverse clutch means 460, the carrier 490 moves. . At this time, the second sun gear 440 is in a state of being released from the second reverse clutch means 480. The driving force transmitted to the carrier 490 is transmitted to the hub shell 600 via a ratchet 610 provided around the inner surface of the hub shell 600. Accordingly, the wheel coupled to the hub shell 600 by the spokes is rotated by the rotation of the hub shell 600, thus moving the bicycle.

  3. For medium speed gears

  In the case of a medium speed gear, first forward and reverse clutch means 450 and 460 attached around the inner surface of the first sun gear 430 and second forward and reverse directions attached around the inner surface of the second sun gear 440. Clutch means 470 and 480 are in a released state. In this state, the driving force of the driving sprocket is transmitted to the driven sprocket 310 connected to the driving sprocket via the chain. The clockwise rotation of the driven sprocket 310 is transmitted to the driver 320 holding one end. The operation of the driver 320 is transmitted to the carrier 490 and the ring gear 410. The driving force transmitted to carrier 490 and ring gear 410 rotates carrier 490, multi-stage planetary gear 420, and first and second sun gears 430 and 440 in an integrated state. And since the 3rd clutch means 640 attached to the carrier 490 meshes with the ratchet 610 provided around the inner surface of the hub shell 600, the hub shell 600 is rotated by the driving force. Accordingly, the wheel coupled to the hub shell 600 by the spokes is rotated by the rotation of the hub shell 600, thus moving the bicycle.

  4. High-speed first gear

  In the case of the low-speed first gear, the first forward clutch means 450 attached around the inner surface of the first sun gear 430 is in the released state. In this state, the driving force of the driving sprocket is transmitted to the driven sprocket 310 connected to the driving sprocket via the chain. The clockwise rotation of the driven sprocket 310 is transmitted to the driver 320 holding one end. The operation of the driver 320 is transmitted to the carrier 490 through the first clutch means 330. The driving force transmitted to the carrier 490 rotates the multi-stage planetary gear 420 about its own shaft and the shaft of the transmission hub. At this time, the second sun gear 440 tries to rotate clockwise, but is stopped by the second forward clutch means 470. Therefore, the ring gear 410 rotates at a high speed by the rotation of the multistage planetary gear 420 and the carrier 490. Here, the ring gear 410 rotates at a higher speed than the carrier 490. Therefore, the high-speed rotational force transmitted to the ring gear 410 rotates the hub shell 600 through the fourth clutch means 650 attached to the ring gear 410. At this time, the third clutch means 640 slips due to the speed difference between the hub shell 600 and the carrier 490.

  5. For high-speed second gear

  In the case of the low-speed second gear, the second forward clutch means 470 attached around the inner surface of the second sun gear 440 is in the released state. In this state, the driving force of the driving sprocket is transmitted to the driven sprocket 310 connected to the driving sprocket via the chain. The clockwise rotation of the driven sprocket 310 is transmitted to the driver 320 holding one end. The operation of the driver 320 is transmitted to the carrier 490 through the first clutch means 330. The driving force transmitted to the carrier 490 rotates the multi-stage planetary gear 420 about its own shaft and the shaft of the transmission hub. At this time, the first sun gear 430 tries to rotate clockwise, but is stopped by the first forward clutch means 450. Therefore, the ring gear 410 rotates at a high speed by the rotation of the multistage planetary gear 420 and the carrier 490. Here, the ring gear 410 rotates at a higher speed than the carrier 490. Therefore, the high-speed rotational force transmitted to the ring gear 410 rotates the hub shell 600 through the fourth clutch means 650 attached to the ring gear 410. At this time, the third clutch means 640 slips due to the speed difference between the hub shell 600 and the carrier 490.

  In the present invention, the speed ratio among the low-speed first gear, the low-speed second gear, the high-speed first gear, and the high-speed second gear of the bicycle transmission hub is determined by the multi-stage planetary gear 420, the first sun gear 420, the second sun gear 430, and the ring gear. It is determined by the ratio of the number of teeth between 410.

  In the following, further embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 6 is a cross-sectional view of a transmission hub according to a further embodiment of the present invention.

  A further embodiment of the invention relates to a transmission hub in which a plurality of gear trains are disposed in the hub shell 1600 and are controlled by an external lever. The transmission hub according to this embodiment includes a hub shaft 1100 that is provided between the frames and has a spline-shaped ratchet 1110 around the outer surface thereof and has a hollow structure.

  The transmission hub further includes a power transmission unit. The power transmission unit is coupled to a driven sprocket 1200 that receives a driving force from a driving sprocket (not shown) via a chain or a belt, and is coupled to the driven sprocket 1200 at a first end and to a plurality of multi-stage planetary gears 1420 at a second end. A carrier 1300 to be bonded. The carrier 1300 includes a third claw 1310 around the outer surface.

  The transmission hub further includes a multi-stage transmission unit that receives a driving force from the power transmission unit and performs a shift using the ring gear 1410, the multi-stage planetary gear 1420, and the first sun gear 1430 and the second sun gear 1440.

  The transmission hub further includes a transmission control unit. The speed change control unit has control pins 1560 and 1570 and a control member 1510, which are first and second claws provided around the inner surfaces of the first and second sun gears 1430 and 1440 of the multi-stage speed change unit, respectively. 1431 and 1441 are controlled. The transmission control unit further includes a return spring 1520 and a spring guide 1540.

  The speed change hub further includes a hub shell 1600 that receives a speed change driving force from the power transmission unit by engaging with a fourth claw 1411 provided around the outer surface of the ring gear 1410.

  FIG. 7 is a partial cross-sectional perspective view showing the speed change control unit of the speed change hub according to this embodiment. FIG. 8 is a perspective view showing a control member of the transmission hub according to this embodiment. The control member 1510 is provided on the hub shaft 1100 and has an obliquely formed portion around the outer surface thereof. The control member 1510 moves to the left and right by operating an external lever (not shown) or the action of the return spring 1520. The engagement between the ratchet 1110 provided around the outer surface of the hub shaft 1100 and the first and second claws 1431 and 1441 provided in the first and second sun gears 1430 and 1440 is responsive to the movement of the control member 1510. The control pins 1560 and 1570 are controlled by expansion and contraction. Further, the spring guide 1540 allows the return spring 1520 to operate smoothly.

  9 and 10 are front views showing first sun gear 1430 and second sun gear 1440, respectively. The gear teeth are provided around the outer surface of the gear, and the claw seat is formed around the inner surface of the gear for attaching the first claw 1431 and the second claw 1441.

  FIG. 6 is a sectional view showing a transmission hub according to this embodiment of the present invention. The operational effects of the present invention will be described below with reference to FIG.

  In this embodiment of the present invention, the speed change hub is shifted within the third speed by operating the external lever, and the speed of the bicycle at each speed is determined by the ratio of the number of gear teeth.

  In the case of the first speed, the first and second sun gears 1430 and 1440 provided around the inner surfaces of the first and second sun gears 1430 and 1440 by the operation of the first claw control pin 1570 and the second claw control pin 1560 due to the movement of the control member 1510. The claws 1431 and 1441 are in a state of being released from the ratchet 1110 provided around the outer surface of the hub shaft 1100. In this state, a clockwise driving force of a driving sprocket (not shown) is transmitted to a driven sprocket 1200 connected to the driving sprocket via a chain. The carrier 1300 with one end held is moved by the rotation of the driven sprocket 1200. The hub shell 1600 engaged with the fourth claw 1310 is moved by the operation of the carrier 1300. At this time, the hub shell 1600 rotates via the multi-stage planetary gear 1420, but the first sun gear 1430 and the second sun gear 1440 are released from the hub shaft 1100, which affects the rotation of the hub shell 1600. Does not affect.

  In the case of the second speed, the first claw 1431 provided around the inner surface of the first sun gear 1430 is moved by the operation of the first claw control pin 1570 and the second claw control pin 1560 by the movement of the control member 1510. The ratchet 1110 provided around the outer surface is engaged, while the second claw 1440 is in a released state. In this state, a clockwise driving force of a driving sprocket (not shown) is transmitted to the driven sprocket 1200. The carrier 1300 with one end held is moved by the rotation of the driven sprocket 1200. As a result, the multi-stage planetary gear 1420 coupled to the end of the carrier rotates. Since the first sun gear meshes with the hub shaft 1100 supported by the frame, the rotational force of the multistage planetary gear 1420 is transmitted to the ring gear 1410. The rotation of the ring gear 1410 is transmitted to the hub shell 1600 via a fourth claw 1411 provided around the outer surface of the ring gear 1410. At this time, the third claw 1310 attached to the carrier 1300 slips due to the difference in rotational speed between the third claw 1310 and the hub shell 1600.

  In the case of the third speed, the first and second sun gears 1430 and 1440 provided around the inner surfaces of the first and second sun gears 1430 and 1440 by the operation of the first claw control pin 1570 and the second claw control pin 1560 due to the movement of the control member 1510. The claws 1431 and 1441 mesh with a ratchet 1110 provided around the outer surface of the hub shaft 1100. In this state, the clockwise rotation of the driven sprocket 1200 is transmitted to the carrier 1300. The multistage planetary gear 1420 is rotated by the rotation of the carrier 1300. Since the first sun gear meshes with the hub shaft 1100 supported by the frame, the rotational force of the multistage planetary gear 1420 is transmitted to the ring gear 1410. The rotation of the ring gear 1410 is transmitted to the hub shell 1600 via a fourth claw 1411 provided around the outer surface of the ring gear 1410. At this time, the first sun gear 1430 rotates around its own axis while slipping, and the third claw 1310 attached to the carrier 1300 slips due to the difference in rotational speed between it and the hub shell 1600.

FIG. 1 is a cross-sectional view of a transmission hub according to an embodiment of the present invention. FIG. 2 is a view for explaining the operation of the speed change control unit of the speed change hub according to the present invention. FIG. 3 is an exploded perspective view showing the transmission control unit of the transmission hub according to the present invention. FIG. 4 is a diagram for explaining the operation of the input / output control unit of the transmission hub according to the present invention. FIG. 5 is a view for explaining another embodiment of the input / output control unit of the transmission hub according to the present invention. FIG. 6 is a sectional view of a transmission hub according to another embodiment of the present invention. 7 is a partial cross-sectional perspective view showing a transmission control unit of the transmission hub of FIG. FIG. 8 is a perspective view showing a control member of the transmission hub of FIG. FIG. 9 is a front view showing a first sun gear of the transmission hub of FIG. FIG. 10 is a front view showing a second sun gear of the transmission hub of FIG.

Claims (7)

A hub shaft provided between the frames, the hub shaft including a ratchet having a spline shape provided around an outer surface of the hub shaft;
A power transmission unit comprising: a driven sprocket that receives a clockwise driving force from a driving sprocket; and a driver that is coupled to the driven sprocket at the first end and has a ratchet at the second end, and is provided around the inner surface of the driver A driver with a provided first clutch means;
Multi-stage transmission unit comprising: a carrier that receives driving force from a power transmission unit, comprising a ratchet at the first end of the carrier, and a plurality of multi-stage planetary gears and a third clutch means at the second end of the carrier A multi-stage planetary gear; two or more sun gears meshing with the multi-stage planetary gear and having forward and reverse clutch means around the inner surface; and a ring gear meshing with the multi-stage planetary gear, the second gear of the ring gear Ring gears having second and fourth clutch means around the inner and outer surfaces at the end respectively;
A variable speed output unit comprising: a hub shell for receiving driving force from the carrier and the ring gear; and third and fourth clutch means disposed at predetermined positions between the carrier and the hub shell and between the ring gear and the hub shell, respectively. Third and fourth clutch means in which the preceding one of the third and fourth clutch means is selectively operated;
An input / output control unit comprising: second and fourth clutch means provided between the ring gear and the driver; and an input / output control plate controlled by a combination of the second and fourth clutch means, An input / output control plate having a protrusion provided at a predetermined position of the input / output control plate;
And
A shift control unit comprising: a movable pin that is moved by an external lever; a return spring that returns the movable pin to its initial state; and a first clutch means provided on the driver and attached to the sun gear operated by the movable pin A control member for controlling both further clutch means;
Cycling hub for bicycles. A bicycle transmission hub according to claim 1, comprising:
A bicycle transmission hub provided with clutch means around the inner surface of the sun gear to prevent right or left rotation. A bicycle transmission hub according to claim 1, comprising:
The transmission control unit is provided on the hub axle,
Return spring provided in the hub axle;
A movable pin provided to be movable left and right;
A control member provided so as to be movable around the outer surface of the hub axle, wherein the control member is coupled to the movable pin, has a groove and a sliding surface around the outer surface, and is formed at the second end of the control member. A control member having an inclined surface and a coupling groove formed in an intermediate portion of the control member such that a forward or reverse control pin is coupled to the control member via the coupling groove;
Forward or reverse control pin having two or more inclined surfaces;
Cycling hub for bicycles. A bicycle transmission hub according to claim 1, comprising:
The second and fourth clutch means of the input / output control unit are respectively coupled to the outer surface and the inner surface of the ring gear, and when the inner clutch means rotates, input / output control plates having protrusions at predetermined positions are formed at regular intervals. A bicycle transmission hub which is rotated by a predetermined angle by a groove and thereby controls an outer clutch means. A bicycle transmission hub according to claim 1, comprising:
The second and fourth clutch means of the input / output control unit are respectively coupled to the outer surface and the inner surface of the ring gear so that when the driver rotates, an input / output control plate having protrusions on the outer surface and the inner surface is provided on the ratchet provided on the driver. A bicycle transmission hub that meshes and thus rotates a predetermined angle and second and fourth clutch means attached to the inner and outer surfaces of the ring gear are controlled by rotation of the input / output control plate. A hub axle provided between the frames and having a hollow structure, the hub axle comprising a ratchet provided around an outer surface of the hub axle;
A power transmission unit comprising: a driven sprocket that receives a driving force from a driving sprocket; and a carrier coupled to the driven sprocket at a first end and coupled to a plurality of multistage planetary gears at a second end, the outer surface of the carrier A carrier with claws provided around it;
A multi-stage transmission unit that receives a driving force from a power transmission unit, the multi-stage transmission unit having the following: a ring gear having a claw seat around the outer surface; a multi-stage planetary gear; and a claw around the inner surface First and second sun gears having seats;
A speed change control unit comprising: a control pin and a control member for controlling first and second claws respectively provided around the inner surfaces of the first and second sun gears of the multi-stage speed change unit; a return spring; and a spring guide;
And
A hub shell that receives the driving force transmitted from the carrier and the ring gear;
Cycling hub for bicycles. A bicycle transmission hub according to claim 6,
The shift control unit is built into the hub axle,
A control member having an inclined shape formed at regular intervals around the outer surface;
A plurality of control pins that are moved by the control member; and a return spring that moves the control member;
Cycling hub for bicycles.

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