TWM624044U - Bicycle hub clutch mechanism assembly - Google Patents

Abstract

A clutch mechanism assembly located in a bicycle wheel hub shell includes a driving component, a hub bushing, a clutch piece, a planetary gear component, a fitting mechanism and a first resistance piece. The hub shell forms a clutched state with the drive assembly through the clutch piece and the hub bushing. The hub shell controls the clutch state with the drive assembly through the planetary gear assembly, the fitting mechanism and the first resistance element. Wherein, the sun gear of the planetary gear assembly is assembled with the clutch member through the fitting mechanism. The outer gear ring of the planetary gear assembly is arranged on the inner peripheral surface of the hub housing. Each planetary gear train of the planetary gear assembly is geared to the sun gear and the outer ring gear respectively. The planetary gear carrier is assembled with the wheel axle through the first resistance member. The first resistance member accommodates the wheel axle in a manner that does not rotate relatively.

Description

Bicycle hub clutch mechanism assembly

The present creation is related to bicycle hubs, in particular to a bicycle hub clutch mechanism assembly.

In general, a typical bicycle hub is operated by a number of over-running clutches that have been shaped. These clutches are typically a simple ratchet mechanism that allows the bicycle's drive mechanism to engage the hub when the wheel is driven forward or backward. One downside of this arrangement is that any mechanism that drives the bike backwards or forwards is no different, again having to force the cranks and pedals to rotate backwards. Such situations are inconvenient for riders who wish to freeride backwards (eg, aerobatic rides).

There are a lot of different wheel designs out there to solve this problem. In general, these hubs only engage to work when the drive mechanism moves forward relative to the bicycle. These are often referred to as "Freecoaster" wheels. Unfortunately, this type of hub, if the rider cannot keep their feet still while coasting backwards and accidentally pedals forward, can cause a sudden engagement that instantly transfers torque from the wheel back through the chain. The cranks are forced to rotate backwards with considerable force, a situation that could make it dangerous for the rider to accidentally drop them.

Therefore, in order to eliminate this possibility, a free-running wheel hub is to be proposed that allows a large degree of "play" or "slack" condition before the drive mechanism engages the hub. As such, the rider is required to perform a large pedalling motion before the drive mechanism is engaged, thereby reducing the chance of accidental engagement of the drive mechanism.

One of the main purposes of this creation is to provide a bicycle hub clutch mechanism assembly, which can make the driving mechanism have a greater degree of "clearance" or "relaxation" before engaging the hub when the bicycle freely slides backwards.

Another main purpose of the present invention is to provide a bicycle hub clutch mechanism assembly, which can make the driving mechanism and the hub have a greater degree of "clearance" or "relaxation" before the bicycle is freely sliding forward or backward. .

In order to achieve the aforementioned objective, a preferred example implemented according to the technical idea of the present invention is to provide a hub clutch mechanism assembly that can be accommodated in a accommodating space defined by a bicycle hub shell and a bicycle hub. The hub clutch mechanism assembly includes a driving component, a hub bushing, a clutch piece, a planetary gear component, a fitting mechanism and a first resistance piece. The drive assembly includes a sprocket and a drive sleeve, the sprocket includes a plurality of sprocket teeth protruding radially relative to the axle, and an axle accommodating hole defined by the sprocket for accommodating the axle, The drive sleeve projects axially from the sprocket toward the hub housing, the drive sleeve including an externally threaded portion. The hub bushing includes an outer annular surface, a shaft hole and an inner conical surface, and the outer annular surface is attached to the inner peripheral surface of the hub shell. The clutch element includes a clutch section, a connecting section extending axially from the clutch section to the hub shell, and a through hole defined by the clutch section and the connecting section for accommodating the wheel axle. The clutch section includes an outer conical surface for cooperating with the inner conical surface to form a state of disengagement or engagement, and an inner thread portion for cooperating with the outer thread portion of the driving sleeve to control the movement of the clutch member. The planetary gear assembly includes a sun gear, an outer gear ring, a planetary gear carrier, at least one gear shaft and at least one planetary gear. The sun gear includes a gear segment, a cylindrical segment extending axially from one side of the gear segment and having an outer diameter larger than the gear segment, and a gear hole defined by the gear segment and the cylindrical segment for for accommodating the axle. The outer gear ring includes a ring gear portion and a ring hole for accommodating the wheel shaft, and the outer gear ring is arranged on the inner peripheral surface of the accommodating space. The planet gear carrier includes a ring body and a through hole defined by the ring body for the axle to pass through. The at least one gear shaft is fixedly connected to the planetary gear carrier. The at least one planetary gear train is rotatably fixed on the gear shaft, and is respectively engaged with the gear segment of the sun gear and the ring tooth portion of the outer gear ring. The fitting mechanism is used for connecting the connecting section of the clutch member and the sun gear, so that the clutch member can axially linearly displace relative to the sun gear and rotate with the sun gear. The first resistance member is arranged in the through hole of the planet gear carrier, and accommodates the wheel shaft in a manner that does not rotate relative to the wheel shaft.

In addition, in order to achieve the aforementioned purpose, another preferred example of the bicycle hub clutch mechanism assembly implemented according to the technical idea of the present invention, in addition to having the features of the aforementioned first embodiment, further includes a second resistance member, a a first brake and a second brake. The second resistance member is arranged between the wheel hole of the sun gear and the peripheral surface of the wheel shaft; the first braking member is arranged on the sun gear in a manner of restraining the sun gear when the hub shell rotates forward on the cylindrical section. The second braking member is arranged on the first resistance member in a manner of restraining the planetary gear carrier when the hub shell rotates backward.

First, please refer to Fig. 1 and Fig. 2, in which reference numeral 900 shows a hub for the rear wheel of a BMX bicycle. The wheel hub 900 has a hub shell 901 , and the wheel hub shell 901 is mounted on the two frame hooks 903 by two wheel hub bolts 902 (as shown by the dotted line in FIG. 2 ). Each of the wheel hub bolts 902 is screwed with a wheel shaft 904, and the wheel shaft 904 is assembled with the wheel hub shell 901 by a plurality of sleeves 905, each of the frame hooks 903, a protective cover mechanism 906 and two main bearings 907 , so that the hub shell 901 can rotate around the axis XX' of the axle 904 . The hub 900 further has a receiving space 908 defined between the hub shell 901 and the axle 904 . The first preferred embodiment 100 of the bicycle hub clutch mechanism assembly of the present invention is arranged in the accommodating space 908 .

Please refer to Fig. 3, Fig. 4 and Fig. 5. Fig. 3 is a cross-sectional view along the direction of Fig. 2-2, wherein the clutch member and the hub bushing are in a disengaged state, and Fig. 4 is the first preferred embodiment 100 of the present invention. Fig. 5 is an axial cross-sectional perspective view of the bicycle hub shell shown in Fig. 1, which shows a part of the outer gear ring 42 of the first preferred embodiment 100 of the present invention. The hub clutch mechanism assembly 100 includes a drive assembly 10 , a hub bushing 20 , a clutch member 30 , a planetary gear assembly 40 , a fitting mechanism 50 , a first resistance member 60 and an elastic constricting member 70 .

The drive assembly 10 includes a sprocket 12 and a drive sleeve 14. The sprocket 12 has a plurality of sprocket teeth 120 protruding radially, and an axle accommodating hole 122 defined by the sprocket 12 for receiving The axle 904 is accommodated, and the drive sleeve 14 protrudes from the sprocket 12 axially toward the hub housing 901 . The drive sleeve 14 includes an externally threaded portion 140 .

The hub bushing 20 has an outer annular surface 200 , a shaft hole 202 and an inner conical surface 204 . The outer annular surface 200 is attached to the inner peripheral surface of the hub shell 901 and can be attached to the hub shell 901 Rotating, the axle hole 202 is for the axle 904 to pass through.

The clutch member 30 includes a clutch section 300, a connecting section 302 extending axially from the clutch section 300 to the hub shell 901, and a through hole 304 defined by the clutch section 300 and the connecting section 302, Used to accommodate the axle 904 . The clutch section 300 includes an outer conical surface 306 for cooperating with the inner conical surface 204 to form a disengagement or engagement state, and an inner thread portion 308 for cooperating with the outer thread portion 140 of the driving sleeve 10 to control the clutch movement of the piece 30.

Please refer to FIGS. 6 to 9 . FIG. 6 shows the clutch member 30 , the sun gear 41 , the planetary gear carrier 43 , the planetary gear shaft 44 , the planetary gear 45 , and the first resistance member 60 in the first preferred embodiment of the creation. And the three-dimensional decomposition body of the elastic constricting member 70 . FIG. 7 is a combined perspective view of the aforementioned components according to the first preferred embodiment of the invention. 8 is an exploded perspective view of the axle of the bicycle shown in FIG. 1 and the first resistance member of the first preferred embodiment of the present invention, and FIG. 9 is a cross-sectional view along the direction of 9-9 of FIG. 7 .

The planetary gear assembly 40 includes a sun gear 41 , an outer gear ring 42 , a planetary gear carrier 43 , three gear shafts 44 and three planetary gears 45 . The sun gear 41 includes a gear segment 410 , a cylindrical segment 412 extending axially from one side of the gear segment 410 and having an outer diameter larger than the gear segment 410 , and a cylindrical segment 412 formed by the gear segment 410 and the cylindrical segment 412 . The defined wheel hole 414 is used for receiving the wheel axle 904 . The outer gear ring 42 is arranged on the peripheral surface of the accommodating space 908 in this embodiment, and the outer gear ring 42 includes a ring gear portion 420 . The planet gear carrier 43 includes a ring body 430 and a through hole 432 defined by the ring body 430 for the axle 904 to pass through. The gear shafts 44 are respectively fixed to the ring body 430 of the planetary gear carrier 43 in a manner of 120 degrees apart. Each of the planetary gears 45 is pivotally connected to the gear shaft 44 , and is respectively engaged with the gear segment 410 of the sun gear 41 and the ring tooth portion 420 of the outer gear ring 42 . The fitting mechanism 50 is used to connect the clutch member 30 and the sun gear 41 , so that the clutch member 30 can axially linearly displace relative to the sun gear 41 or rotate with the sun gear 41 under different conditions. In the present embodiment, the engaging mechanism 50 includes two female engaging portions 52 with appropriate widths respectively disposed on the connecting section 302 of the clutch member 30 , and two cylindrical portions disposed on the sun gear 41 respectively. The male inserting portion 54 on the segment 412 . When assembled, each of the male inserting parts 52 is respectively inserted into each of the female inserting parts 54 .

The first resistance member 60 is disposed in the through hole 432 of the planet gear carrier 43 , and the through hole 432 accommodates the wheel shaft 904 in a manner that does not rotate relative to the wheel shaft 904 . In this embodiment, the through hole 432 of the planet carrier 43 is provided with a first concave portion 434 on the peripheral surface. The convex ring 64 , a through hole 66 defined by the barrel 62 and the convex ring 64 for receiving the axle 904 , and a shoulder surface 69 . Thereby, the first resistance member 60 can be inserted into the first concave portion 434 of the planetary gear carrier 43 by the convex ring 64 . In addition, the barrel 62 of the first resistance member 60 is provided with a plurality of slit grooves 620 extending axially from an open end and arranged in a ring shape, and a claw portion 622 located between two adjacent slit grooves 620, Thereby, the first resistance member 60 can exert an appropriate amount of elastic biasing force on the axle 904 . Furthermore, the peripheral surface of the through hole 66 of the first resistance member 60 is provided with a first flattened portion 68, and the peripheral surface of the axle 904 is provided with a second flattened portion 9040 corresponding to the first flattened portion 68, whereby the first flattened portion 9040 is formed. A resistance member 60 will not rotate relative to the axle 904 . In addition, the bicycle wheel hub clutch mechanism assembly 100 further includes an elastic constriction 70 in this embodiment, and a flange 624 is provided on the outer peripheral surface of each claw portion 622 of the first resistance member 60, and the passage of the planet gear carrier 43 A second concave portion 436 is defined on the peripheral surface of the hole 432 , and an abutting surface 438 is defined by the second concave portion 436 . When assembled, the elastic constricting member 70 is looped around the barrel 62 of the first resistance member 60 and sandwiched between the flange 624 and the abutting surface 438 .

The above is a detailed disclosure of the structure of each element and the relationship between the elements of the bicycle hub clutch mechanism assembly 100 according to the first preferred embodiment of the present invention. The operation of the bicycle hub clutch mechanism assembly 100 is described below in three aspects. situation.

1. The first thing to explain is the normal forward pedaling situation. When the rider pedals forward, the drive assembly 10 will be driven by the bicycle chain (not shown) Then, the driving assembly 10 starts to rotate forward (clockwise from the driving side of the bicycle, as shown by the arrow in FIG. 1 ). At this time, the clutch member 30 is blocked by the first resistance member 60 and the The elastic restraint 70 is not constrained by rotation, but is displaced axially along the axle 904 (as shown by the arrow in FIG. 2 ) until it engages with the hub bushing 20 . At this point, the driving force of the driving assembly 10 starts to act, and the bicycle is driven forward.

2. The next thing to explain is that when the rider stops pedaling, and the bicycle moves forward automatically. From the situation when sliding. When the rider stops pedaling, the drive assembly 10 stops moving, but the hub shell 901 rotates forward with the wheel, and the rotational power forces the clutch member 30 to move away from the hub bushing 20 Axial displacement (shown in the direction of the arrow in Figure 3) until it no longer engages the hub bushing 20, and the bicycle wheel is free to ride or spin. During forward sliding/free sliding, the planet gear carrier 43 will be blocked by the first resistance member 60 and the elastic The sexual restraint 70 is braked and kept in a stationary state. At this time, since the planetary gear assembly 40 will play a role, in other words, due to the toothed relationship between the outer gear ring 42 and the planetary gears 44 , the sun gear 41 will rotate in the direction of rotation with the hub shell 901 . Rotate in the opposite direction. At this time, on the one hand, the clutch member 30 will be pushed toward the direction close to the hub bushing 20 to maintain a proper clearance with the hub bushing 20 . On the other hand, the braking force of the first resistance member 60 and the elastic constricting member 70 on the planetary gear carrier 43 will be completely overcome, and the planetary gear carrier 43 will be forced to rotate around the first resistance member 60 .

3. The last thing to note is that when the rider stops pedaling and the bicycle is From the situation when sliding. In this state, the outer gear ring 42 will rotate backward with the hub shell 901, from the driving side of the bicycle Look, that is, rotate counterclockwise, at this time, the planetary gear carrier 43 will also be braked by the first resistance member 60 and the elastic constricting member 70 to keep in a static state, and the planetary gears 44 will force the sun Gear 41 rotates clockwise and moves the clutch 30 away from the hub bushing 20, even though the two are kept at maximum clearance. Once the clutch member 30 is completely disengaged from the hub bushing 20, the braking force of the first resistance member 60 and the elastic constricting member 70 on the planetary gear carrier 43 will be completely overcome, so that the planetary gear carrier 43 can surround the first A resistance member 60 rotates. In addition, if the rider inadvertently pedals slightly forward to make the gap smaller, the first resistance member 60 and the elastic constricting member 70 can prevent the planet gear carrier 43 from rotating again, and make the sun gear 41 reverse with the clutch member 30 and disengage from the hub bushing 20 . In this way, regardless of the input of the rider, the clutch member 30 and the hub bushing 20 can always be kept in a state of maximum clearance.

Next, the present specification will further describe the second preferred embodiment of the bicycle hub clutch mechanism assembly of the present invention in conjunction with the drawings. It must be mentioned here that the second preferred embodiment has most of the elements and the combination relationship is the same as the first preferred embodiment. Therefore, when referring to the same elements, their designation numbers will be compared with the first preferred embodiment. The preferred embodiment is the same. In more detail, the second preferred embodiment of the bicycle hub clutch mechanism assembly of the present creation is represented by the reference number 200. The hub clutch mechanism assembly 200 also includes a driving component 10, a hub bushing 20, a clutch component 30 , a planetary gear assembly 40 , a fitting mechanism 50 , a first resistance component 60 and an elastic constricting component 70 . The hub clutch mechanism assembly 200 The difference from the hub clutch mechanism assembly 200 is that it further includes a second resistance member 80 , a first braking member 92 and a second braking member 94 .

First, please refer to FIGS. 10 to 15 , wherein FIG. 11 is a cross-sectional view along the direction of 11-11 of FIG. 10 , FIG. 12 is an exploded perspective view of some components of the second preferred embodiment of the invention, and FIG. 13 is the first embodiment of the invention. The three-dimensional combined view of the sun gear and the second resistance member in the second preferred embodiment, Fig. 14 is the planetary gear assembly in the second preferred embodiment, the first resistance member, the elastic constricting member, and the second resistance member , a combined perspective view of the first brake and a second brake, Figure 15 is a cross-sectional view along the direction of Figure 14 of 15-15.

The second resistance member 80 is disposed between the wheel hole 414 of the sun gear 41 and the peripheral surface of the wheel shaft 904 . Further, the second resistance member 80 includes a resistance bushing 81 , a resistance spring 82 , a friction washer 83 , a spacer washer 84 and a retaining ring 85 . The resistance bushing 81 has an inner annular surface 812 , an outer annular surface 814 and a set of holes 816 for accommodating the wheel shaft 904 . The outer annular surface 814 is attached to the peripheral surface of the wheel hole 414 of the sun gear 41 . The inner ring surface 812 accommodates the wheel shaft in such a way that the resistance bushing 81 does not rotate relative to the wheel shaft 904 . In this embodiment, a third flattened portion 8120 is provided on the inner ring surface 812 for connecting with the wheel shaft 904 The second flattened portion 9040 cooperates to prevent the resistance bushing 81 from rotating relative to the axle 904 . In this embodiment, the resistance spring 82 is an O-ring, which is sleeved on the peripheral surface of the axle 904 and sandwiched between the friction washer 83 and the spacer washer 84 for fine-tuning the spring force to fine-tune the resistance. When the friction washer 83 , the resistance spring 82 and the spacer washer 84 are assembled to the sun gear 41 , the resistance spring 82 is charged and then fixed by the retaining ring 85 .

The first braking member 92 is a first ring leaf spring in this embodiment. The first braking member 92 includes a body portion 920, a head end 922 and a tail end 924. The head end 922 is embedded in the hub shell The body 901 (as shown in FIG. 10 ), the body 920 surrounds the cylindrical section 412 of the sun gear 41 in a counterclockwise direction, and makes the tail end 924 and the head end 922 opposite, thereby, when the first brake When the member 92 is rotated clockwise, the body 920 will tighten the cylindrical section 412 of the sun gear 41 .

The second brake member 94 is a second ring leaf spring in this embodiment. The second brake member 94 includes a body portion 940 , a hook-shaped head end 942 and a tail end 944 . The hook-shaped head end 942 is embedded in a socket 439 of the planetary gear carrier 43 . The body portion 940 surrounds the elastic constricting member 70 in a clockwise direction, and the tail end 944 is opposite to the head end 942. Therefore, when the first braking member 92 is rotated counterclockwise, the body The portion 940 will tighten the elastic gather 70 . In addition, in this embodiment, the inner peripheral surface of the elastic constricting member 70 is provided with a plurality of positioning protrusions 702 relative to the grooves 620 of the first resistance member 60 for the elastic constricting member 70 to be positioned on the The surface of the barrel 62 of the first resistance member 60 .

The above is a detailed disclosure of the structure of each element and the relationship between the elements of the bicycle hub clutch mechanism assembly 200 according to the second preferred embodiment of the present invention. The operation of the bicycle wheel hub clutch mechanism assembly 200 is also described in the following three aspects.

1. The first thing to explain is the normal forward pedaling situation. When the rider pedals forward, the drive chain causes the drive assembly 10 to rotate forward (eg direction of the arrow shown in Figure 10). The clutch member 30 is initially restrained by the sun gear 41 , and the sun gear 41 is restrained by the braking force generated by the second resistance member 80 . Thus, the clutch 30 does not rotate with the drive assembly 10 but moves axially towards the hub bushing 20 . When the outer conical surface 306 of the clutch member 30 contacts the inner conical surface 204 of the hub bushing 20, the two will fit together to drive the bicycle forward.

2. When the rider stops pedaling and allows the bicycle to freely slide forward, the automatic The actuation situation of the wheel hub clutch mechanism assembly 200 . When the rider then stops pedaling and the wheel is freewheeling forward, the hub shell 901 will With the clutch 30 rotated forward relative to the drive assembly 10 . The clutch member 30 is initially driven by the hub pad 20, and then is driven by the first brake member 92. At this time, the clutch member 30 will move away from the hub bushing 20, disengage from the driver assembly 10, and will maintain the maximum clearance. At this time, the hub bush 20 will continue to advance until it reaches the limit of motion. When this happens, the braking force of the first brake member 92 on the sun gear 41 will be overcome, and the bicycle will move forward Freeride.

3. When the rider stops pedaling and freewheels the bicycle backwards, the automatic The actuation situation of the wheel hub clutch mechanism assembly 200 . When the rider stops pedaling and the bicycle slides backwards, the hub shell 901 rotates backwards (relative to 10 ), the hub bushing 20 and the outer ring gear 42 rotate rearward relative to the axle 904 . The power of this backward rotation will drive the planetary gear carrier 43 to rotate backward, but this rotation will be restricted by the second brake member 94 . Then, each of the planetary gears 45 will drive the sun gear 41 to rotate forward to drive the clutch member 30 to disengage from the hub pad 20 . Once the clutch member 30 can no longer be driven by the drive assembly 10, the braking force exerted on the planet gear carrier 43 will be overcome, and the planet gear carrier 43 will rotate backwards allowing the sun gear 41 to remain stationary, which , the clutch member 30 and the hub bushing 20 will maintain a maximum clearance.

If the rider accidentally steps forward when sliding backwards, the braking mechanism of the planetary carrier 43 (including the second braking member 94 , the first resistance member 60 and the elastic constricting member 70 ) will The planet gear carrier 43 is restrained, so that the sun gear 41 rotates forward, pushing the clutch member 30 away from the hub spacer 20 again. In this way, accidental engagement of the clutch member 30 with the drive assembly 10 can be prevented.

10: Drive components 100: First Embodiment 12: sprocket 120: sprocket teeth 122: Axle accommodating hole 14: Drive casing 140: External thread part 20: hub bushing 200: outer ring surface 202: Shaft hole 204: Inner conical surface 30: Clutch 300: clutch section 302: Connection segment 304: Through hole 306: Outer conical surface 308: Internal thread part 40: Planetary gear assembly 41: Sun gear 410: Gear Segment 412: Tubular segment 414: Wheel hole 42: External gear ring 420: Ring Tooth 43: Planetary carrier 430: Ring Body 432: Through hole 434: First recess 436: Second recess 438: Abutment Surface 44: Gear shaft 45: Planetary gear 50: Fitting mechanism 52: Female insert card part 54: male embedded card part 60: The first resistance piece 62: barrel 620: Cut trench 622: Claw 624: Flange 64: convex ring 66: Perforation 68: The first flattening part 69: Shoulder face 70: Elastic band 702: Positioning bump 80: Second resistance piece 81: Resistance Bushing 812: inner ring surface 8120: The third flattening part 814: Outer Torus 816: Set of holes 82: Resistance Spring 83: Friction Washer 84: Spacer washer 85: retaining ring 92: First brake 920: Body 922: head end 924: tail 94: Second brake 940: Body 942: Hook head end 944: tail 900: Wheels 901: Hub shell 902: Hub Bolts 903: Frame dropout 904: Axle 9040: Second flattened part 905: Sleeve 906: Protective cover mechanism 907: Main bearing 908: accommodating space X-X': axis

Hereinafter, in conjunction with some drawings, the first and second preferred embodiments of the bicycle hub clutch mechanism assembly of the present creation will be further described, wherein: Fig. 1 is a perspective view of a bicycle hub equipped with a creative bicycle hub clutch mechanism The first preferred embodiment of the assembly; Figure 2 is a cross-sectional view along the direction 2-2 of Figure 1, wherein the clutch member and the hub bushing are in an engaged state; Fig. 3 is a sectional view along the direction 2-2 of Fig. 1, wherein the clutch member and the hub bushing are in a disengaged state; 4 is an exploded perspective view of some components of the first preferred embodiment of the creation; FIG. 5 is an axial cross-sectional perspective view of the bicycle hub shell shown in FIG. 1 , which shows the first comparison of the present invention. A part of the outer gear ring of the preferred embodiment; Fig. 6 is the clutch member, sun gear, planet gear carrier, planet gears in the first preferred embodiment of the invention The three-dimensional decomposition body of the wheel, the first resistance member and the elastic constricting member; Fig. 7 is the clutch member, sun gear, planetary gear carrier, planetary gears in the first preferred embodiment of the invention The combined perspective view of the wheel, the first resistance member and the elastic constricting member; FIG. 8 is the axle of the bicycle shown in FIG. 1 and the first resistance member and the axle of the first preferred embodiment of the present invention. exploded perspective view; Fig. 9 is a sectional view along the direction of 9-9 of Fig. 7; Figure 10 is a perspective view of a bicycle hub equipped with a creative bicycle hub clutch mechanism The second preferred embodiment of the assembly; Fig. 11 is a sectional view along the direction of 11-11 of Fig. 10; 12 is an exploded perspective view of some components of the second preferred embodiment; 13 is a three-dimensional combined view of the sun gear and the second resistance member in the second preferred embodiment of the creation; Figure 14 shows the planetary gear assembly in the second preferred embodiment of the invention, the first resistance member, elastically constricted A combined perspective view of the component, the second resistance component, the first brake component and a second brake component; and FIG. 15 is a cross-sectional view taken in the direction 15-15 of FIG. 14 .

10: Drive components

12: sprocket

14: Drive casing

140: External thread part

20: hub bushing

204: Inner conical surface

30: Clutch

306: Outer conical surface

308: Internal thread part

43: Planetary carrier

438: Abutment Surface

60: The first resistance piece

62: barrel

624: Flange

70: Elastic band

904: Axle

Claims (12)

A bicycle hub clutch mechanism assembly, which is accommodated in the bicycle hub housing and the An accommodating space defined by the bicycle axle, the hub clutch mechanism assembly includes: A drive assembly includes a sprocket and a drive sleeve, the sprocket includes a plurality of relative to The sprocket teeth protruding radially from the axle, an axle receiving hole defined by the sprocket is used to receive the axle, the drive sleeve protrudes from the sprocket axially toward the wheel hub housing, the drive the sleeve includes an external thread portion; A hub bushing includes an outer ring surface, a shaft hole and an inner conical surface, the outer ring surface is attached on the inner peripheral surface of the hub shell; a clutch member including a clutch segment extending axially from the clutch segment to the interior of the hub shell an extending connecting section, and a through hole defined by the clutch section and the connecting section for accommodating the axle, the clutch section includes an outer conical surface for cooperating with the inner conical surface to form a state of separation or engagement, and an inner thread part for controlling the movement of the clutch part in cooperation with the outer thread part of the driving sleeve; A planetary gear assembly is arranged in the accommodating space, and the planetary gear assembly includes: a sun gear including a gear segment, a gear segment extending axially from one side of the gear segment and a cylindrical section with a diameter larger than the gear section, and a wheel hole defined by the gear section and the cylindrical section for receiving the axle; an external gear ring, comprising a ring gear portion and a ring hole for receiving the wheel shaft, the external gear ring The ring system is arranged on the inner peripheral surface of the accommodating space; and a planetary gear carrier including a ring body and a through hole defined by the ring body for the Axle wear; at least one gear shaft, the gear shaft is fixed on the planet gear carrier; and at least one planetary gear, the planetary gear train is rotatably fixed on the gear shaft, and respectively engage with the gear segment of the sun gear and the ring teeth of the outer ring gear; A fitting mechanism is used to connect the connecting section of the clutch member and the sun gear, so that the clutch is connected The member is axially linearly displaced relative to the sun gear and rotates with the sun gear; and A first resistance member is arranged in the through hole of the planet carrier, and the through hole is not The axle is accommodated in a way of rotating relative to the axle. The bicycle hub clutch mechanism assembly as claimed in claim 1, further comprising a second resistance A force member is arranged between the wheel hole of the sun gear and the peripheral surface of the wheel shaft; a first braking member is arranged in the barrel of the sun gear in a way that restrains the sun gear when the hub shell rotates forward and a second braking member, which is arranged on the first resistance member in a manner of restraining the planet carrier when the hub shell rotates backward. The bicycle hub clutch mechanism assembly as claimed in claim 1 or 2, wherein the fitting machine The structure includes at least one female inserting portion arranged on the connecting segment of the clutch member, and at least one male inserting portion arranged on the cylindrical segment of the sun gear and inserting on the female inserting portion. The bicycle hub clutch mechanism assembly as claimed in claim 1 or 2, wherein the outer gear ring The system is integrally formed on the inner peripheral surface of the hub shell. The bicycle hub clutch mechanism assembly as claimed in claim 1 or 2, wherein the planetary gear The peripheral surface of the through hole of the wheel frame is provided with a first concave portion. The first resistance member includes a cylinder body, a convex ring located at one end of the cylinder body and having an outer diameter larger than the cylinder body, and a convex ring formed by the cylinder body and the convex ring. In the defined through hole, when the first resistance member is arranged in the through hole of the planet gear carrier, the convex ring is accommodated in the first concave portion. The bicycle hub clutch mechanism assembly as claimed in claim 5, wherein the first resistance member The peripheral surface of the perforation is provided with a first flattened part, and the peripheral surface of the wheel axle is provided with a second flattened part which is connected with the first flattened part. The bicycle hub clutch mechanism assembly as claimed in claim 5, wherein the first resistance The barrel body of the piece includes a plurality of notch grooves extending axially from an open end and arranged in a ring shape, and a claw is formed between two adjacent notch grooves. The bicycle hub clutch mechanism assembly as claimed in claim 7, further comprising an elastic constricting member, a flange is provided on the outer peripheral surface of each claw portion of the first resistance member, and a peripheral surface of the through hole of the planetary gear carrier is provided with a flange. A second concave portion, and an abutting surface defined by the second concave portion, the elastic constraining element is looped over the barrel of the first resistance element and abuts against the flange and the flange of the first resistance element respectively. between the abutting surfaces of the second resistance member. The bicycle hub clutch mechanism assembly as claimed in claim 2, wherein the second resistance member comprises a resistance bush and a resistance spring, the resistance bush comprises an inner ring surface and an outer ring surface, the outer ring surface is Abutting on the peripheral surface of the wheel hole of the sun gear, the inner ring surface accommodates the wheel shaft in a manner that does not rotate relative to the wheel shaft, the resistance spring is sleeved on the peripheral surface of the wheel shaft, and is clamped on the resistance bushing between the sleeve and an open end of the connecting section of the clutch piece. The bicycle wheel hub clutch mechanism assembly as claimed in claim 9, wherein the inner annular surface of the resistance bushing is provided with a third flattened portion for cooperating with the second flattened portion of the wheel shaft, so that the resistance bushing is not opposite to each other rotates on the axle. The bicycle hub clutch mechanism assembly as claimed in claim 2, wherein the first braking member is a first ring leaf spring, the first ring leaf spring includes a body, a head end and a tail end, the body is The head end is connected to the hub shell to surround the cylindrical section of the sun gear, and the tail end is opposite to the head end. The bicycle hub clutch mechanism assembly as claimed in claim 2, wherein the second brake member is a second ring leaf spring, the second ring leaf spring includes a body, a head end and a tail end, the body is Encircling the first resistance member, the head end is fastened to the planet gear carrier, and the tail end is opposite to the head end.

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